OF THE BLOOD AND CIRCULATION. 



197 



C 



CL* 



naked eye (fig. 211, a b). They are, consequently, from eight 



to ten times larger here than in man. After the Proteus, we 



observe the largest 



blood-corpuscles in ^ 



the land salamanders, 



where they measure 



in the long diameter 



from the 1-5 Oth to 



the 1-6 Oth of a line. 



In the water sala- 



manders they are still 



very large, from the 



l-TOth to the l-80th 



of a line in length 



(fig. 212). In the 



frog and toad they Rg> 212> _ Blood and lyraph . g]obules O f the 

 are from the 1 -bOth to great wa ter-newt (Triton cristatus). , b, 

 the 1-1 00th of a line blood-globules; a*, a blood-globule with eccen- 

 in length (fig. 213). trie nucleus ; c, lymph-granules, d, e, blood- 

 In the lizards ser- globules in progress of development ; they are 

 -i , surrounded with delicate involucra. Globules 



its, ana 1 ,s, Qf this description are found abundantly in the 



they are throughout blood of we ll-fed animals generally. 

 smaller, though still 

 measuring from the 1-1 22d to the 1-1 50th of a line in length. 



In the majority of 

 fishes, and particu- 

 larly in all the bony 

 fishes, the blood-cor- 

 puscles are of a 

 rounded oval (fig. 

 214), not much long- 

 er than broad, flat- 

 tened, and from the 

 1-1 50th to the 1 -200th pi g . 213. A, a, a, a, b, blood-globules of 

 of a line in the long the edible frog (Rana esculentn} ; c, lymph 

 diameter. In the granule. B, blood-globules after the action 

 skates and sharks, of acetic acid. 



again, they are notably larger, and very similar to those of the 

 frog ; they are as much as from the 1-5 Oth to the 1-1 00th of a 

 line in the long axis. It is remarkable that in the cycios- 

 tomes they greatly resemble those of man, being rounded, 

 discoidal, vaulted, slightly bi-concave (fig. 215, a, b}, and mea- 



