368 Zoological Society. 



sized discs are first set down ; a space is then left ; the small and 

 large-sized discs are next noted ; and histly the average, deduced from 

 the preceding numbers, is jdaced beneath the line. The long dia- 

 meter of the oval blood-discs is denoted by L.D. and the short 

 diameter by S.D. Except when noted to the contrary, the blood 

 was obtained from living and adult animals. The measurements of 

 the nuclei were taken after their exposure, by the aid of dUute acetic 

 acid on the corpuscles, which it is necessary to state, since I have 

 elsewhere* shown that the form and dimensions of the nucleus are 

 materially affected by different treatment. 



MAMMALIA. 



Fer^. 

 Indian Badger {Arctonyx collaris, F. Cuv.) ^ 3609 ; blood from 

 the vena cava after death. Malay Sun Bear {Helarctos Malayanus, 

 Horsf.) = 3562 ; blood from a prick of the lip. Red Puma {Felis 

 unicolor? Traill) = 4481 ; blood from a prick of the skin of the arm. 

 Foetal Kitten, half an inch long {Felis domestica, Briss.) = 2233 ; 

 blood from the heart and from the navel-string immediately after 

 death. The average size of the corpuscles is about twice that of 

 the corpuscles of the mother. The corpuscles of the foetus contained 

 distinct nuclei, much resembling lymph globules. The size only of 

 the nucleated corpuscles is above given ; there were several much 

 smaller which presented no nuclei. Stoat {Mustela Erminea, Linn.) 

 = 4155 ; blood from the heart soon after death. 



RuMINANTIA. 



Camel (Camelus Bactrianus) : L.D. = 3123 ; S.D. = 5876 ; thick- 

 ness of the discs = 15210; pale globules = 3348 : blood from a prick 

 of the upper lip. Red Deev{Cervus Elaphus, Linn.) = 4324. Foetus 

 of Fallow Deer (Cervus Dama, Linn.) = 3478 ; blood from the heart, 

 Jan. 2, 1842, a few hours after death. The foetus measured 4^ inches 

 from the forehead to the buttocks. The corpuscles exhibited no di- 

 stinct nuclei when treated with water or vegetable acids. The average 

 size of the corpuscles from the uterine veins of the mother was ^^jth. 

 of an inch. In another foetus examined Jan. 12, and measuring six 

 inches, the corpuscles did not differ apjjreciably from those of the first 

 foetus. Ibex (Capra Caucasica) ; corpuscles slightly smaller than 

 those of the Goat. The measurements are given in this Journal, vol. xi. 

 p. 524. Indian Buffalo (Bos frontalis, Lambert) = 4299 ; blood from 

 a vein of the ear. 



RODENTIA. 



Jerhosi (Dipus jEgyptius, Hemp, and Ehren.) = 4172 ; blood from 

 a vein of the ear. Common Porcupine {Hystrix cristata, Linn.) = 

 3369 ; blood from a prick of the skin of the nose. Common Hare 

 (Lepus timidus, Linn.) = 3560 ; blood from the heart two hours after 

 death. 



* See Contributions to Minute Anatomy, Lond, and Edinb. Phil. Mag. 

 for August 1812; and Remarks on tlie Shape of the Blood-Corpuscles of 

 Oviparous Vertebrata, Annals of Nat. Hist., vol. xi. p. 525. 



