xlviii tYotes to Introductory Lecture. 



fcssion there for some years ,• but at length removed to Lon- 

 don, where he got into extensive practice. He and Dr. King 

 appear to have been the first who performed the experiment 

 of the transfusion of blood. Besides several papers inserted 

 in the Philosophical Transactions, he wrote a treatise, which 

 procured him a great and deserved renown, de corde, item de 

 motu et colore sanguinis et chyli in eum transitu, 1669. Among 

 other things in this treatise, he pointed out the difference 

 between arterial and venous blood, proving that the florid 

 colour of the arterial blood is derived from the air. Trans. 

 Royal Soc. Loud. Miv Mrid. vol. 1. y. 197. 



JS^ote 11. 



John Conrad Peyer, M. D. rendered important services 

 to the anatomists of his day, by his work entitled " Meryeo- 

 logia, sive de ruminantibus et ruminatione commentarius." 

 Bazil, 1685. 



JS^ote 12. 



Regner de Graaf was born at Shoonhoven, in 1641 ; he 

 studied at Leyden under de le Boe Sylvius and Van Home ; 

 but took his doctor's degree at Angers, and practiced at 

 Delft. He was the author of the following anatomical trea- 

 tises : Be sued pancreatici naiura, 1664., and 1666 ; De vi- 

 romm organis generationi inservientihus, 1668 ; l)e miilie- 

 rum organis generationi inserTientihus, ±672 ; Lefensio par- 

 tium genitalium, 1673. These were collected into one 8vo 

 volume, and reprinted after his death, under the title of 

 Opera Omnia, Leyden, 1677. He died prematurely when 

 only 32 years of age, in consequence, as is supposed, of great 

 uneasiness of mind, brought on by the warm disputes in whicli 

 he was involved with Swammcrdam. In his tract on the 

 pancreatic juice, he gives an account of a very difficult ana- 

 tomical experiment which he performed on a living dog, 

 opening the abdomen, and inserting a tube into the pancrea- 

 tic duet, for the purpose of collecting the juice thereof; to 

 which he, like Sylvius, ascribed acid properties. By his 

 other writings he threw considerable light on the structure 



