114> On the Blood Corpuscles of the Mammiferous Animals. 
puscles remarkably variable in size, and differing much whether 
examined dry or in their serum. In the former state 1-5 333rd 
and l-6000th most common diameters, and extreme sizes 
l-6400th and l-4562nd. In the serum l-6856th the most 
frequent size. Blood obtained for the first examination from 
a prick of the nose, and for the second some weeks after- 
wards from an incision of the ear. The animal was diseased. 
114. Buffalo, from Manilla, Buhaliis,) adult female, 
1-5 1 42nd, 1 -4800th, and l-4500th common diameters. Ex- 
treme sizes 1 -5333rd and l-3600th. Average thickness of 
the edges of the disks 1 -14,000th of an inch. Blood from 
a vein of the ear. 
115. Cape Buffalo, {Bos Caffre^)^u\\- gro^n male. l-5142nd 
and l-4800th, most frequent sizes in the dried specimens. Ex- 
treme diameters 1 -6000th and l-3554th. The corpuscles in 
their serum were commonly l-5333rd, or even as small as 
1 -6000th of an inch. Blood from a vein of the ear. 
From two trials it appeared that disks were slightly smaller 
than in Bos Buhalus. 
Napu Musk Deer (49.) An adult female having lately died 
at the Zoological Gardens, I availed myself of an opportunity 
of examining some blood from the different cavities of the 
heart, as well as from the cava, portal, and mesenteric veins. 
The result fully confirms the accuracy of my former observa- 
tions*, especially that the blood corpuscles of the Musk Deer 
are smaller than any previously described in the mammalia. In 
relation to the parts from which the blood was obtained, there 
was no appreciable difference in the disks. The average dia- 
meter of those procured from the dead animal was l-13,4C0th 
of an inch. 
In an animal with blood corpuscles so remarkably minute, 
it was interesting to ascertain the comparative magnitude of 
the lymph globules. The latter were therefore carefully ex- 
amined with this view ; and their size, appearance, and che- 
mical characters found to be identical with the lymph glo- 
bules of many mammals with large blood particles. The lymph 
granules in the Napu Musk Deer varied in diameter from 
1 -5000th to l-3500th of an inch. Hew^son inferred from 
his observations that there was a relation between the particles 
of the lymph and blood in the same animal, and a difference 
in the size and shape of the former in different animals. 
I have recently examined the blood of the Vicugna (37. )j 
and compared it again with that of the Dromedary (36.). In 
* Dublin Medical Press, Nov. 27 , 1839. L. and E. Phil. Mag. Dec. 
1839, and Jan. 1810. 
