126 Bibliographical Notices. 



logists, have been or still are engaged in a similar line of inquiry, 

 we have good reason to hope that this interesting branch of compa- 

 rative anatomy will soon receive much of the illustration of which it 

 may be susceptible from the improved resources of modern science. 

 Of the 136 species in which Mr. Gulliver has at present described 

 the blood corpuscles in the class mammalia, the following table will 

 exhibit at one view the number in each order. 



Quadrumana 31 



Cheiroptera 1 



Ferae 38 



Marsupialia 6 



Glires 19 



Edentata 1 



Pachydermata 9 



Ruminantia 31 



Total 136 



1. Quadrumana. The corpuscles seem to differ but little from 

 those of man. 



2. Cheiroptera. In the bat the average diameter of the particles 

 is about :^V(jth of an inch, a very common size it seems of the cor- 

 puscles among the mammiferous animals generally. 



3. Ferce. The average-sized corpuscles of this order appear to be 

 generally between j oVc*^ ^^^ Wo o*^ ^^ ^^ ^^^^ ^° diameter. In the 

 seal and dog they are a little larger ; and in the Javanese Ichneumon 

 they seem to be as small as in any of the carnivora. In the larger 

 species of the genus Felis, as the lion, tiger, and puma, the blood 

 particles are very nearly alike in all respects ; and the corpuscles in the 

 smaller species, as the cat, serval, &c. are much of the same diameter, 

 the blood disks in the cat being very slightly smaller than those of 

 the tiger. 



4. Marsupialia. The blood corpuscles in the interesting animals 

 of this order presented nothing peculiar. The average diameter ap- 

 pears to be between :3, jVo^^ ^^^ ^^jVo^^ °^ ^^ inch. 



5. Glires. The common-sized corpuscles appear to be compre- 

 hended between ^j^jo^^ ^^^ TzV^^^ o^ ^^ ^^^ ^^ diameter. Of the 

 nineteen species examined nothing remarkable was seen in the blood 

 particles, except some of very small size, though of regular form, in 

 certain species of the genus Sciurus. These little disks Mr. Gulliver 

 thinks deserving of further attention. 



6. Edentata. In the weasel- headed armadillo the blood corpuscles 

 presented nothing unusual ; their most common diameter was from 

 ^^th to 52-Voth o^ an inch. 



