VOL. XXIV.] PHILOSOPHICAL TRANSACTIONS. 105 



book with Pappus's description of it; restores some places in it that have been 

 corrupted; and shows the use that the ancients made of these data. 



The two Musical Tracts follow, which the editor thinks are not both Euclid's, 

 perhaps neither, as is shown in the preface. Next are Euclid's Phaenomena, 

 which were never before published in Greek. This book is not doubted to 

 be Euclid's, as agreeing with Pappus's description of it. Dr. Gregory has re- 

 stored its own original figures, which Josephus Auria, in his translation, had 

 changed for others, far less convenient and intelligible. 



After this come the Optics and Catoptrics, which, if not spurious (for Proclus 

 indeed mentions books of Euclid concerning these subjects) are very much cor- 

 rupted, as in the preface is fully shown. To these are added the notes of Sir 

 Henry Savile, which he wrote on the margin of his own book, and which show 

 that he was as great a master of mathematics, as he was a patron of them. 



Next is the book De Divisionibus. This commonly goes under the name 

 Machometes Bagdedinus. But because there is no other book extant of Euclid's 

 with this title, although it is clear from Proclus that he wrote such a one; and 

 because Mr. John Dee, who translated it, thinks that this is Euclid's, it was 

 thought proper to publish it here. To this also are added some notes of Sir 

 Henry Savile, which much elucidate the matter. Lastly, is a Fragment de Levi 

 et Ponderoso, published by Hervagius in Latin, and by Tatraglia in Italian, 

 which commonly passes for Euclid's. These last two are not to be found in 

 Greek, being lost, if ever they were in that language. There are several other 

 of Euclid's works, mentioned by Pappus and Proclus, that are quite lost. These 

 Dr. Gregory describes at length in the preface. 



A Letter from Dr. William Oliver , F.R.S. concerning a Calenture. N° 290, 



p. J 562. jrt i 



In the month of August 1693, (then in the Bay of Biscay) in lat. 47, a sailor 

 on board the Albemarle man of war, between 30 and 40 years of age, was seiz- 

 ed with phrenitis, or as Dr. O. terms it, a calenture. He was raving and so 

 violent, that 3 or 4 men could scarcely hold him. 'He was recovered by copious 

 bleeding, 50 ounces of blood (as near as could be guessed) being drawn from him 

 by 3 orifices, in the space of -^ an hour. 



A New Division of Terrestrial Brute Animals, particularly of those that have their 

 Feet formed like Hands ; with Observations on the Opossum, By Edward 

 Tyson, M. D. F. R. S. N° 290, p. 1565. 



Having formerly given the anatomy of a female opossum, (Phil. Trans. N*'239*) 



* See page 248, vol. iv. of this abridgment. 

 VOL. V. P 



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