76 MR. T. WHARTON JONES ON THE BLOOD-CORPUSCLE CONSIDERED IN 
shown) and the blood of the Napu Musk Deer (in which, according to the same 
authority, the red corpuscles are smaller than those of any other marnmiferous animal) 
would be well-adapted. 
7 9. Accordingly I made application to the Council of the Zoological Society for 
leave to obtain a minute quantity of blood from the animals I have mentioned. 
With this request the Council of the Society readily complied*, so far as regards the 
Elephant, but could not as regards the Musk Deer, there being at present no spe- 
cimen in their menagerie. As a substitute for the blood of the Musk Deer I have 
had recourse to that of the Goat, as distinguished for very small “ red corpuscles.” 
80. The result of my examination of the blood of the Elephant is, that the cellee- 
forin nucleus of the nucleated cell is larger than that of any other animal the blood 
of which I have examined, and that it presents a remarkable and exact correspond- 
ence in size with the “red corpuscle” of the same animal. (See figs. 9 and 23.) 
81. The result of my examination of the blood of the Goat is, that the cellseform 
nucleus of the nucleated cell is smaller than that of any other animal the blood of 
which I have examined. As to its correspondence in size with the red corpuscles, this 
does not at first view appear so complete as in the preceding instances ; the large 
majority of “ red corpuscles” being smaller than the cellseform nucleus of the nucleated 
cell. There are, however, some “ red corpuscles”-f~ which exactly correspond in size 
with the cellseform nucleus of the nucleated cell (see figs. 1 1 and 24), and these have 
all the characters of the early stage. (See below, par. 86.) 
82. Notwithstanding this slight discrepancy in the blood of the Goat, which more- 
over is rather apparent than real, I believe that it will be admitted as a general pro- 
position, that there is a close and constant correspondence in size between the cellse- 
form nucleus of the nucleated cell and the “ red corpuscle” of the same blood. 
83. 2nd. Correspondence in Form between the Cellaeform Nucleus of the Nucleated Cell 
and the “ Red Corpuscle. ,, — In the blood of the animals which I had hitherto examined, 
I had found the cellseform nucleus of the nucleated cell circular, and therefore so far 
corresponding in shape with the “ red corpuscle but not considering this con- 
clusive as to the existence of an essential relation in respect of form, it occurred to 
me that the point might be tested by a reference to the blood of the Camel tribe, in 
which the red corpuscles are of an oval shape. 
84. Accordingly, availing myself of the liberal permission granted me by the 
Council of the Zoological Society, I procured a small quantity of the blood of the 
Paco, and subjected the cellseform nucleus of its nucleated cells to a comparison with 
its “ red corpuscles.” The result was that in the nucleated cells generally the cellseform 
* I most gladly seize the present opportunity to express my sense of the obligation thus conferred on me by 
the Council of the Zoological Society. 
t The disproportion in size between the nucleated cell and the "red corpuscle” of the blood of the Goat is 
still greater than that between the nucleated cell and the “ red corpuscle” of the blood of the other marnmiferous 
animals which I have examined, and therefore still more strongly forbids the supposition that the nucleated cell 
and the “red corpuscle” are the same body. 
