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 l-5333rd 

 and l-6000th most common diameters, and extreme sizes 

 l-64;00th and l-4-562nd. 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 tiie ear. The animal was diseased. 



114. Buffalo, from Manilla, (5o5 Bubalus,) adult female, 

 l-5I42nd, l-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, (5o5 C«^r^,) full-grown 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 1 -5333rd, or even as small as 

 l-6000th of an inch. Blood from a vein of the ear. 



From two trials it appeared that disks were slightly smaller 

 than in Bos Bubalus. 



Napu Musk Deer {4^9.) 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 

 lieart, 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 1 -13,400th 

 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 chai'acters 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 

 l-5000th to l-3500th of an inch. Hewson 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.), 

 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. 1840. 



