This tutorial is for those of you who want to learn some basic programming in Python for the digital humanities, but also for those who have never programmed or may become filled with terror at the sight of a single line of code (trust me, I know the feeling!). At the end of this guide, you should know how to perform optical character recognition (OCR) to make a pdf searchable. For this, we are going to use “ocrmypdf”, a Tesseract based Python package with wonderful capabilities. Everything will be done online from your web browser, so don’t worry, you will not have to install anything on your computer!
I have tried to keep the tutorial very simple and straight to the point, at the cost of occasionally sacrificing some useful and important explanations about the code. For that, I profusely apologize to my colleagues in the department of computer science. Please, do not send the Spanish Inquisition.
Why Tesseract and ocrmypdf?
Some of you may be familiar with, or even regular users of the OCR function provided by Adobe Acrobat DC pro. The ctrl+f function is one of the simplest and most efficient tools to support analysis of text and research. Acrobat DC is a powerful and very easy to use software, but this comes at a price. First, Acrobat works only with a handful of common modern languages such as English, French, German or Japanese. Tesseract on the other hand can recognize characters from a broad variety of modern and classical languages, including, but not limited to, Armenian, Classical Arabic, Classical Greek, Syriac, and Old Georgian, to name only a few. Second, Tesseract is a free, and open-source software, presenting a more cost-efficient option compared to other expensive commercial options and I am sure many of you would rather settle for the free but equally powerful alternative.
This is a free Jupyter notebook that will save your data on your personal google drive. Just remember to hit the save button before closing the page.
Open a new notebook and sign up with a Gmail address. You will want to use your @nd.edu address but any personal google account will work too.
As a first step, we need to download ocrmypdf, and all its dependencies. To do so, simply type the following lines. The first will download the python package ocrmypdf, while the other lines will deal with the dependencies. For those of you new to coding, you will learn the first rule of coding: any errors in spelling, indentation and so forth can break your code. Be careful!
When the above lines have been written, run the cell by pressing ctrl+enter or press the button in the upper left corner. The download process should take around a minute. Once the download is complete, you should see a little green tick next to the upper left arrow.
Once the package and its dependencies have been downloaded, we will need to import “ocrmypdf” so that we can put it to work. Add a line of code to your colab sheet by clicking on + Code and write the following code:
Next, add a copy of your scanned pdf to the “files/content” folder on the left side of your screen (or any other folder of your choice, you will just have to note its path somewhere). In our case, we are going to work with the first page of an article on the Mevlevi Sufi order published by the Byzantinist Speros Vryonis Junior.
In a new cell, enter the following lines of code (beware, the underscores are double underscores!).
Here, the name on the left should be that of the file you want to ocr (or its path if put in another folder), the one on the right should be that of the new, postprocessed file. The code uses the exact name of the file, ‘Vryonis_Article.pdf’. You can keep the exact same name if you want the new file to overwrite the original one. In my case, my code is directing ocrmypdf to create a new file: ‘Vryonis_Article_OCR.pdf’. Once generated, the post-processed article should appear in the same folder.
If you ever get an error, simply restart the runtime before running the cell again.
Et voila! You can now search your pdf with ctrl+F or copy and paste any sentence you want.
But this is not the most exciting part of this tutorial, and we may want to spice things up a little bit. Tesseract is very good at OCRing (yes, this is a verb, at least according to the WordSense dictionary) non-Latin scripts, but the process is a bit more involved. As an example, let’s take a page from the Masālik al-abṣārfīmamālik al-amṣār written in the 14th century by the Syrian polymath al-ʿUmarī.
And here we are. Those who can read Arabic will notice that the result is extremely impressive. This, however, is a rather neat scan and Arabic is often difficult to properly OCR because of the cursive nature of the script. If the quality of your scan is poor, you may also be able to clean it with Python beforehand for a better result. I may develop this point further in another post.
Beyond Arabic, Tesseract works very well with other non-cursive Semitic scripts, and you may get excellent results with Hebrew for example. Here is a last example from a Syriac Bible.
If you have any questions or comments about this guide, feel free to contact me.
“network: anything reticulated or decussated, at equal distances, with interstices between the intersections” (Dr. Johnson; johnsonsdictionaryonline.com)
Geoffrey Chaucer is remembered as an innovator who made the first translation of one of his contemporary Petrarch’s sonnets into English, and who may have initiated the now-universal association of St. Valentine’s Day with romantic love. He may also, in his poetic dream vision The Houseof Fame, have given us a premonition of the staggering power and potential for misuse of the modern-day internet. The narrator/protagonist of this poem, named Geoffrey, is taken to visit the goddess Fame by a giant eagle. Her palace, which he visits first, is impressive but disappointing, as Geoffrey fails to find what he seeks there. In the final 250 lines of the poem, he is taken to a nearby structure, which critics at least as far back as George Lyman Kittredge[i] have referred to as the House of Rumor. This is the section of the poem that forecasts the internet as we know it today.
The eagle chides Geoffrey on their first meeting for his introverted habit of coming home every night to spend the evening like a hermit (or scholar during pandemic lockdown) with his books. What Geoffrey needs, and what the eagle has been sent by Jupiter to help him acquire, are “tidings” of what is happening in the world outside. The Middle English word “tidinges” is glossed as “news” in the Norton Chaucer.[ii] The University of Michigan’s online Middle English Dictionary [iii] suggests a variety of other meanings, including “report,” “information” (both specific and general), “message,” “announcement,” “gossip,” and “rumor.” All of these taken together seem to sum up the variety of things that people today search for on the internet.
The eagle tells Geoffrey that the House of Fame is located at a point equidistant from earth, sky, and sea, so that any spoken word from any of these locations must travel there. In the grand palace of Fame herself, however, Geoffrey does not find any of the “tidings” he seeks. He is then guided to another nearby structure, the so-called House of Rumor. Geoffrey labels it a “house,” and compares it to the labyrinth built by Daedalus in Greco-Roman mythology, but the term “House of Rumor” is never used in the poem. Critics have identified Chaucer’s source for this image with the house of fame described by Ovid in the 12th book of his Metamorphoses; although Ovid does say that thousands of rumors can be found there (“milia rumorum,” line 12:55), the goddess he places in charge is Fama (Fame), not Rumor.[iv]
The structure itself is sixty miles long, made of twigs. The twigs are woven together in a way that suggests baskets or cages to the narrator, and he notices thousands of holes throughout the weave. This presumably circular structure, formed of interlocking strands, is eerily like the visual depictions of the internet that are produced when it is imagined as a visible structure. The very name “internet” suggests such an interlocking construction to the mind. Today, we picture the strands in diagrams of the internet as the pathways along which our information travels, but for Chaucer, it is the holes in between the twigs that allow tidings to escape.
The entire structure of this house is constantly spinning, so fast that Geoffrey is unable to enter without the eagle’s assistance, and a loud noise issues from it. The noise the house makes as it spins is described first as resembling the sound of a stone flying from a catapult or that of a strong wind, but from inside come other sounds that Chaucer calls “gigges” and “chirkinges” (lines 1942-43), which Eleanor Parker in “Chaucer’s Post-Truth World” links to “tweets” and “Twitter”—after all, the entire house has already been compared to a bird cage.[v] The twittering sounds are presumably made by the tidings themselves, which Chaucer does seem to imagine like birds in a cage. In all, we are presented with a bewildering sense of speed and power associated with the house, coupled with the impression that the tidings, while they may be small, have a life and energy all their own.
The only way for Geoffrey to enter the structure is with the help of the eagle, who acts like a modern search engine. When he drops Geoffrey through a window, the structure stops spinning for a moment and allows his entrance. Inside, Geoffrey finds “tidings” of every sort—news about war and peace, work and leisure, life and death, loss and gain, and even about such things as weather and the prices of goods. All the tidings are being shared from person to person among a great crowd of figures that fills the space; Geoffrey had been told earlier by the eagle that these are embodied figures representing the people who first spoke the tidings down on earth. Like a game of “telephone,” the tidings are passed from ear to ear, growing with each repetition, until when each tiding reaches its full size, it flies through a window to spread itself freely—essentially “going viral.”
Some of the tidings Geoffrey observes are true, and some are false. Both are being spread with equal enthusiasm. We are not told how Geoffrey is able to tell the difference, but within the dream vision, it is apparently obvious. He also notices that, as they try to escape through the spaces between the twigs, sometimes two tidings will become stuck as they squeeze through the same hole, so that he sees many instances in which a true tiding and a false tiding become stuck together and intermingled so that no one henceforth will be able to separate them again. All of this seems to be a very prescient depiction of the way that information both true and false is spread on today’s internet with incredible speed, growing and changing as it is repeated so that it is very difficult to tell whether much of it is true, false, or a blend of both.
Living and working in London as he does, Geoffrey would already be positioned to hear most of the tidings spreading through his world. The intervention of Jupiter and his giant eagle seems unnecessary just to bring Geoffrey news, and in fact he never gains any concrete tidings within the confines of the poem. The true gift that he is being given may be this, even temporary, ability to discern the difference between true and false tidings, which those who encounter the tidings after they escape the House of Rumor clearly cannot do. Nor, unfortunately, can many users of the internet in our own day.
Chaucer’s poem, which he left unfinished, does not manage to provide a satisfactory solution to the problem. As Geoffrey is walking around listening for tidings, his attention is drawn by a loud noise in the corner where love tidings are shared. Everyone in the structure rushes to this corner, pushing and straining to hear some important announcement. In the last lines of the poem as we have it, a figure appears that Geoffrey says he cannot identify, except that “he seemed for to be/ A man of gret auctoritee” (“great authority,” lines 2157-58). As soon as a “great authority” appears, someone whose word seems to represent true and reliable information, the entire structure of the House of Rumor apparently collapses—or at least, Chaucer has no more to say about it. For hundreds of years, readers have debated Chaucer’s intended identity of this “great authority.” Users of today’s internet likewise seem unable to identify yet still seek an authoritative source of information that would have the power to quell rumor and uncertainty. If our culture could find such a universally recognized source as an alternative to our current twittering, buzzing, rumor-laden communications, many of our cultural conflicts might even vanish, like a dream in a dream vision poem.
Angela Fulk, Ph.D. Dept. of English SUNY Buffalo State
[i] Kittredge, George Lyman. Chaucer and His Poetry. Harvard UP, 1915.
[ii] Chaucer, Geoffrey. The Norton Chaucer. Edited by David Lyman. Norton, 2019. All quotations from Chaucer are taken from this edition.
[iii] Middle English Dictionary. Ed. Robert E. Lewis, et al. Ann Arbor: University of Michigan Press, 1952-2001. Online edition in Middle English Compendium. Ed. Frances McSparran, et al.. Ann Arbor: University of Michigan Library, 2000-2018. <http://quod.lib.umich.edu/m/middle-english-dictionary/>. Accessed 05 May 2021.
[iv] Ovid. Metamorphoses. The Latin Library. thelatinlibrary.com. Accessed 6 May 2021.
[v] Parker, Eleanor. “Chaucer’s Post-Truth World.” History Today. historytoday.com/out-margins/chaucers-post-truth-world. Accessed 6 May 2021.
As a specialist in the study of women’s education and literacy in England in the Middle Ages, I’m asked this question a lot. I’ll cut to the chase: YES.
How do we know this?
Medieval England (on which I’ll focus this blog) was a multilingual nation.1 English had been its primary vernacular from the time of the Anglo-Saxons (about 450) until the Norman Conquest of 1066, when French became the language of the nobility, government, and diplomacy.2 By the mid-fifteenth century, though, English had reasserted dominance as the primary vernacular language, while the Church, clerics, and higher education continued to use Latin.3 Because medieval English people would have heard and used all three languages in daily life, children were taught to read and speak all of them.4 Whether children’s reading knowledge became advanced depended on the importance of reading in their lives and what socioeconomic station they attained. In fact, most of the evidence for literacy survives from the upper classes; uncovering the history of less privileged groups remains difficult.
Medieval scholars commonly thought of childhood in three divisions: infantia (birth to about 7 years), pueritia (about 7 to 14 years), and adolescentia (about 14 to 21 years).5 The teaching of reading began in infantia with parents and nurses, if the family could afford such help.
Girls and boys began by learning the letters of the Latin alphabet and the sounds they made. In this way they acquired the basic skills of early reading, called contemporaneously sillibicare (sounding out syllables) and legere (sounding out words), even if they didn’t understand what those sounds or words meant.6 Singing might have been used as well to teach pronunciation, as sung Latin was used in church services. Because reading was important to promote spiritual instruction, and had indeed been cited at least as far back as Jerome in the fourth century as a reason girls should be taught to read, some of the earliest texts learned were the Pater Noster, the Ave, and the Creed. Alphabets and these simple prayers could be written out on a variety of surfaces: boards, painted walls, wooden trays covered in ash or sand, ceramic or metal vessels, or hand-held tablets made of materials such as slate, horn, or board covered in parchment (more on this below).
Beginning around 1300 in England, medieval parents had a model of teaching in St. Anne, the mother of the Virgin Mary. Depictions of her teaching Mary to read appeared in stained-glass windows, manuscript illuminations, wall paintings, and other artistic representations.7 One such survives today in the Church of St. Nicholas in Stanford-on-Avon, Northamptonshire, England.
In this window, Mary is shown sitting in Anne’s lap and holding a bound book with letters written on its pages. She holds the book open so the text is visible to the reader. Her mother Anne points upward, in a gesture both teacherly and pointing heavenward, perhaps emphasizing the importance of reading for spiritual development.8
This beautifully-painted miniature from a Book of Hours shows Anne and a young Mary holding a book together. With her right hand, Anne isolates text for Mary to examine.
Other surviving representations show Anne using a hornbook (mentioned above) to teach Mary to read. This illustration comes from a Book of Hours that originated in England around 1325–1300.
This detail shows the hornbook more closely.
Though the hornbook was at least a medieval invention (discussed recently by Erik Kwakkel and Trinity College, Cambridge, librarians), it survives only from early modern centuries, as in this example, created in London around 1625. The text is printed on sheepskin parchment and fixed to an oak paddle with a brass frame and iron nails; the handle is used for holding the hornbook. The parchment is laminated over with a processed animal horn (hence the name) to protect the text.
A text from the 1230s, written by a layman, Walter of Bibbesworth, also reveals much about how boys and girls learned, especially languages, in a gentry household. Bibbesworth was a wealthy English landowner and a knight who wrote this book for his neighbor and fellow member of the gentry, Dionisie de Munchensi. Dionisie had three young children to educate, and as part of the expectations of their class, they would have needed to learn a French more advanced than what they would have picked up through everyday living. The image below shows the opening leaf of Walter of Bibbesworth’s Tretiz.
Walter addresses Dionisie in column 1, lines 10-20, identifying the purpose of his text: “Chere soer, pur ceo ke vous me / pryastes ke jeo meyse en ecsryst [sic] / pur vos enfaunz acune apryse / de fraunceys en breve paroles” (Dear sister, because you have asked that I put in writing something for your children to learn French in brief phrases). What follows is a narrative poem, beginning in column 1, line 21, that describes childhood, starting with birth and ending in young adulthood with a large household feast. In each scene, Walter presents French vocabulary for Dionisie’s children to learn.
Many clues in the text demonstrate that the physical book was shown to children so they could learn the reading of words on a page, not just the sounds of them. Walter gives many homophones, for example, that would only make sense in writing, rather than in pronunciation. Some of the vocabulary also has English translations written in between the lines of the main text. You can see this in the image above in the poem, which starts at column 1, line 21, and goes into column two. All the smaller words written between the lines give the English translation of the main text, which is written in French.
In pueritia and adolescentia
Once they moved into pueritia (about 7-14 years of age), girls of the upper classes would often transition into the care of a mistress (called at that time magistra, magistrix, or maitresse). The mistress provided education in such things as deportment, embroidery, dancing, music, and reading.9 For any skills the mistress did not herself have, she could bring in other household members, such as the minstrel for musical training, the chaplain for more advanced reading and spiritual instruction, and the huntsman for hunting. Specialized academic tutors could teach girls more advanced academic subjects. Sometimes these well-to-do girls were sent to other households to be fostered, serving as ladies-in-waiting to upper-class women. Girls, especially those of the upper classes, could be sent to nunneries as well (sometimes beginning in infantia) for education. Not all girls sent to nunneries were meant for the vocation of nun.10
As their reading abilities progressed, girls and boys moved on to reading comprehension (intelligere) and began to read more sophisticated spiritual texts, such as prayer-books, books of hours, psalters, antiphonals, and saints’ lives. They also would continue on, as personal libraries grew in the thirteenth century, in reading romances, histories, poetry, classical authors, theology, philosophy, and more. It is most likely, given that women were not admitted to the university (unlike boys, who could progress from this stage to Latin grammar school and then on at a university level to the study of business, liberal arts, medicine, canon or civil law, or theology), that the reading of these last few would have been limited to girls whose families could afford private tutors.
By the time they reached adulthood, women who were privileged enough to have obtained a sophisticated education and their own libraries could be avid readers.
The historical and literary records provide examples of such sophisticated learning, primarily among the nobility. For example, the Norman monk and chronicler Robert of Torigni (c.1110–1186), praised the education of St. Margaret of Scotland (d. 1093) and her daughter Matilda (1080–1118), wife of Henry I, writing, “Quantae autem sanctitatis et scientiae tam saecularis quam spiritualis utraque regina, Margareta scilicet et Mathildis, fuerint” (Of how great holiness and learning, as well secular as spiritual, were these two queens, Margaret and Matilda).11
In a different Latin life, commissioned by Matilda about her mother Margaret, the biographer describes how Margaret from her childhood would “in Divinarum lectionum studio sese occupare, et in his animum delectabiliter exercere” (occupy herself with the study of the Holy Scriptures, and delightfully exercise her mind) and notes that her husband, King Malcom III, cherished the “libros, in quibus ipsa vel orare consueverat, vel legere” (books, which she herself used either for prayer or reading), even though Malcom himself could not read Latin.12
This image above shows the unidentified female patron of this Book of Hours kneeling on a prie-dieu, her prayer book open to the text “Maria mater gratiae” (Mary, mother of grace). This open book with its discernable text has several functions: it leads the reader into the prayer; it demonstrates the piety of the patron, kneeling in prayer before both her spiritual book and the Blessed Virgin and Christ (illustrated on the facing leaf); and it shows one of the primary purposes of teaching children to read: being able to use spiritual texts in personal devotion.
Even women who were not noble and who were not able to read much Latin possessed and used books such as the one pictured above. In the mid-fifteenth century Englishwoman Margery Kempe wrote through her scribe of a memorable time in her church of St. Margaret in King’s Lynn when a chunk of masonry fell from the ceiling down onto her as she was praying with her prayer book in hand.
The image below comes from her Book of Margery Kempe as preserved in London, British Library, Additional MS 61823. Lines 24-28 narrate, “Sche knelyd upon hir / kneys heldyng down hir hed. and hir boke in hir hand. / prayng owyr lord crist ihesu for grace and for mercy. Sodeynly fel / down fro þe heyest party of þe cherche vowte fro undyr / þe fote of þe sparre on hir hed and on hir bakke a ston / whech weyd .iii. pownd” (She knelt on her knees, bowing down her head and holding her book in her hand, praying to our Lord Christ Jesus for grace and mercy. Suddenly fell down from the highest party of the church out from under the foot of the rafter onto her head and her book a stone which weighed three pounds). She survived, for which she credited the mercy of Christ.
Finally, a note on those of the working classes. I have not discussed them in detail as it is unfortunately difficult, in fact nearly impossible, to say much about the reading skills of those who left few or no records behind: the great majority of women (and men) of the medieval population were laborers who left little trace in the written record. Yet as we see from the image here below, even for working women, especially in the last few centuries of the Middle Ages, possession and use of books was within the norm, provided those books could be afforded.
My focus here has been tightly on the teaching of reading to medieval English girls. Girls and boys alike were taught to read, and began their reading education in the same ways. Boys alone could attend the medieval university and reach the highest (and best educated) ranks of clerics, but if girls had access to the right resources, they too could be highly educated. The evidence demonstrates that the teaching of reading was not linked specifically to gender; rather, it was a function of both socioeconomic station and the usefulness of such skills for one’s life.
If you’re interested in this topic, I cover the subject in much greater detail, with many other examples and suggested readings, in my article, “Women’s Education and Literacy in England, 1066–1540,” in the “Medieval and Early Modern Education” special issue of History of Education Quarterly, and the accompanying HEQ&A podcast.
Megan J. Hall, Ph.D. University of Notre Dame
 On languages in medieval England, see Amanda Hopkins, Judith Anne Jefferson, and Ad Putter, Multilingualism in Medieval Britain (c. 1066–1520): Sources and Analysis (Turnhout, Belgium: Brepols, 2012).
 W. M. Ormrod, “The Use of English: Language, Law, and Political Culture in Fourteenth-Century England,” Speculum 78, no. 3 (July 2003), 750–87, at 755; and William Rothwell, “Language and Government in Medieval England,” Zeitschrift für französische Sprache und Literatur 93, no. 3 (1983), 258–70.
 David Bell, What Nuns Read: Books and Libraries in Medieval English Nunneries (Kalamazoo, MI: Cistercian Publications, 1995), 57.
 On the complexities of a trilingual England, with a number of helpful citations therein for further reading, see Christopher Cannon, “Vernacular Latin,” Speculum 90, no. 3 (July 2015), 641–53.
 A variety of frameworks were imposed upon the ages of humankind, though these major divisions for the stages of childhood were fairly commonly accepted. For a discussion, see Nicholas Orme, From Childhood to Chivalry: the Education of the English Kings and Aristocracy, 1066-1530 (London: Methuen, 1984), 5–7; and Daniel T. Kline, “Female Childhoods,” in The Cambridge Companion to Medieval Women’s Writing, ed. Carolyn Dinshaw and David Wallace (Cambridge, UK: Cambridge University Press, 2003), 13–20, at 13.
 Jocelyn Wogan-Browne, “‘Invisible Archives?’ Later Medieval French in England,” Speculum 90, no. 3 (July 2015), 653–73. For more on levels of reading Latin, see Bell, What Nuns Read, 59–60; and Malcolm B. Parkes, “The Literacy of the Laity,” in Scribes, Scripts, and Readers: Studies in the Communication, Presentation, and Dissemination of Medieval Texts, 1976 (London: Hambledon Press, 1991), 275–97, at 275.
 On the cult of St. Anne and the teaching of reading, see Nicholas Orme, Medieval Children (New Haven, CT: Yale University Press, 2001), 244–45; and Clanchy, “Did Mothers Teach their Children to Read?,” in Motherhood, Religion, and Society in Medieval Europe, 400–1400: Essays Presented to Henrietta Leyser, ed. Conrad Leyser and Lesley Smith (Farnham, UK: Ashgate, 2011), 129–53. For further examples and a detailed analysis of the Education of the Virgin motif, see Wendy Scase, “St. Anne and the Education of the Virgin,” in England in the Fourteenth Century: Proceedings of the 1991 Harlaxton Symposium, ed. Nicholas Rogers (Stamford, UK: Paul Watkins, 1993), 81–98.
 For a discussion of this window, see Orme, Medieval Children,244–45.
 Boys (especially royal princes) typically followed the same path of moving from the nursery into the care of an educator-caretaker: pedagogus (a term used into the eleventh century) or magister or me[i]stre (terms in use from the twelfth century forward) (Orme, From Childhood to Chivalry, 19).
 Excellent reading on the education of girls in nunneries is found in Eileen Power, Medieval English Nunneries, c. 1275 to 1535 (Cambridge, UK: Cambridge University Press, 1922); Alexandra Barratt, “Small Latin? The Post-Conquest Learning of English Religious Women,” in Anglo-Latin and Its Heritage, Essays in Honour of A. G. Rigg on His 64th Birthday, ed. Siân Echard and Gernot R. Wieland (Turnhout, Belgium: Brepols, 2001), 51–65; and J. G. Clark, “Monastic Education in Late Medieval England,” in The Church and Learning in Late Medieval Society: Essays in Honour of R. B. Dobson; Proceedings of the 1999 Harlaxton Symposium, ed. Caroline Barron and Jenny Stratford (Donington, UK: Shaun Tyas/Paul Watkins, 2002), 25–40; and Dorothy Gardiner, English Girlhood at School: A Study of Women’s Education Through Twelve Centuries (Oxford, UK: Oxford University Press, 1929).
 Robert of Torigni [Robertus de Monte], Historia nortmannorum liber octavus de Henrico I rege anglorum et duce northmannorum, ed. J.-P. Migne, Patrologia cursus completus, series latina 149 (Paris, 1853), col. 886; translated in “History of King Henry the First, by Robert de Monte,” ed. Joseph Stevenson, The Church Historians of England vol. 2, part 1 (London, 1858), 10.
 Transcribed in Symeonis Dunelmensis Opera et Collectanea, ed. J. Hodgson Hinde, vol. 1 (London, 1868), at 238, 241, from the version preserved in London, British Library, Cotton MS Tiberius D iii, fols. 179v–186r (late twelfth century).