140 Mr. Gulliver's Observations on the Blood Corpuscles 



female. Common-sized disks 1 -3693rd, 1 -3429th, and 1 -3332nd 

 of an inch. Extreme diameters l-5333rd and l-2666th. 

 Blood from a prick of the tail. 



140. Ring-tailed Lemur, {Lemur catta,) an adult male. 

 All the following sizes common, l-4000th, l-3840th, l-3644th, 

 l-3600th, l-3557th, l-3429th of an inch. Extreme diameters 

 1 -6000th and 1 -3000th. There were several corpuscles about 

 l-8000th of an inch in diameter, but it is doubtful whether 

 these were true blood disks. 



The size of the corpuscles was altogether remarkably irre- 

 gular. The blood was obtained from a prick of the ear : the 

 animal was apparently not very healthy. 



In some blood obtained from another full-grown male, a 

 few hours after death, the corpuscles were also very irregular 

 in size, but the most abundant disks were chiefly of small and 

 large dimensions, the former being generally l-5000th of an 

 inch in diameter, and the latter I -3500th. There were also 

 a few about l-7000th of an inch, and also some as large as 

 l-3000th. The majority, however, were the small and large 

 kinds first noted, with but very few intermediate gradations. 

 The smaller corpuscles presented a remarkably dark and 

 distinct outline. Blood from the heart, from the coronary 

 veins, as well as from the renal and mesenteric veins. 



141. Black-fronted Lemur, (Lemur ?rigrifro?is,) a full- 

 grown male. The following diameters all common : 1 -4000th, 

 l-4500th, l-4662nd, and l-4705th of an inch. Extreme sizes 

 1 -6000th and l-3500th. 



Blood from the tail in the first trial ; and in the second, 

 made a month afterwards, from a vein of the ear. 



142. Anjouan Lemur, (Lemur Avjuanensis,) a male, nearly 

 full-grown. Common sizes l-4365th, l-4268th, l-4000th, and 

 l-3555th of an inch. Extreme diameters l-5333rd and 

 l-3200th. 



Blood from a wound of the tail ; also from a prick of the 

 hand. 



In the Lemurs the corpuscles were remarkable as being 

 very variable in size. Whether this will be confirmed by 

 future observation, remains to be seen. It is deserving of 

 notice that most of the animals were more or less diseased, 

 and died very rapidly, chiefly of tubercular consumption, in 

 connection with which the blood particles were perhaps more 

 or less modified. 



In the black-fronted Lemur (141.) the disks appeared, 

 from the result of two trials made at different times, to be 

 smaller than in the other Lemurs. 



In another examination of some blood obtained from the 

 heart of an adult white-fronted Lemur (60.), the corpuscles 



