43 
which animal they only slightly exceed those of the Goat in size, as 
noticed in the ‘ Proceedings of the Society,’ Nov. 24, 1840. Among 
the Cats there is a great resemblance of the corpuscles, which are 
only just appreciably larger in the Lion, Tiger, Chetah, and Leopard, 
than in the domestic Cat, so that it would require a nice observation 
to detect any difference. In the Serval and Norway Lynx the cor- 
puscles, obtained after death from the heart, appeared to be fully as 
large as those of any other species of the genus; the corpuscles of 
the Ocelot and Persian Lynx presenting the smallest size. But as 
the blood was obtained from the two last species during life, the ob- 
servations were not quite satisfactory for comparison, as the corpus- 
cles soon undergo changes after death*, and are very liable to certain 
alterations quickly after being abstracted even from the living ani- 
malt. In the Dog they were uniformly found to be slightly larger 
than in the Fox and some other congenerous species; and in the 
Striped and Spotted Hyznas the corpuscles closely resemble those 
of the genus Canis, and are therefore distinctly larger than in the 
Viverride and Felide, with both of which the Hyzna has been as- 
sociated. The corpuscles of the Bassaris approximate pretty nearly 
to those of the Urside. 
“On the whole then, although there is considerable diversity in 
the magnitude of the red particles of the order, there is generally a 
well-marked relation between these and the different families. Thus 
the blood-corpuscles of the Plantigrada may he immediately distin- 
guished from those of the Viverride. Adopting Mr. Waterhouse’s 
subdivisions of the Carnivora, they would stand as follows, if set 
down in the order of the size of their blood-discs :—Seals, Dogs, 
Bears, Weasels, Cats, Viverras. The difference in size is generally 
quite distinct between the corpuscles of the first two and last two 
tribes, the discs of the Weasels forming the connecting link, and 
closely approximating to those of the Cats. The corpuscles of the 
Otter, however, are much larger than any I have yet seen of the 
rest of the Mustelide, and in fact agree very nearly in size with the 
corpuscles of the Seals and Dogs. 
«It has been stated, that in the Carnivora the corpuscles are inter- 
mediate in size to those of the omnivorous species and of the strictly 
vegetable feeders—smaller in the Carnivora, for example, than in 
Man and the Quadrumana, but larger than in the Ruminantia; and 
the same assertion has been extended to the Marsupiata, especially 
that the red particles of the Perameles, which derives its nourish- 
ment from the greatest number of organized substances, are larger 
than the particles either of the carnivorous Dasyure or of the herbi- 
vorous Kangaroo. 
“« This opinion is not supported by numerous measurements given 
by me in the ‘ Philosophical Magazine’ for January, February, March 
doxurus Typus, but I have been assured that it is the P. Bondar of authors ; 
it is the same species as that designated P. 7'ypus in the Phil. Mag. for Jan. 
1840, p. 28. 
* See Lond. and Edin. Phil. Mag. for March 1840, p, 195. 
+ Ibid, Nov. 1840, p. 325. 
