80 On the Condition of the Blood 
sufficient to prevent the two being confounded together. 
I drew several under the camera lucida, of which the 
diameters were from 35 to ip of an inch. 
Prate III. 
Maculated nucleated cells, from the blood of the dog which recovered 
moculation of the poison of the Australian Black Snake. 
x 400 diameters. 
From a drawing by Mr. 0. V. Lawrence. 
The dog at this time (the forenoon) was drowsy, and when 
compelled to move about did so with difficulty, seeming very 
weak, especially in the hind parts. His eyes were dull and 
protruding, and he evinced pain by his doleful looks and by 
snapping at his hind legs. In the afternoon he was very 
much worse. 
‘“‘13th.— Examined carefully the blood from the ear and 
tail. Number of white corpuscles much less than yesterday, 
and not one of the other cells to be found. The blood 
coagulates much more readily than it did yesterday. ‘The 
dog is much better, and except a little stiffness appears to 
be quite well.” 
The observations of Mr. Lawrence are very interesting, 
and seem to point to the simultaneous disappearance of the 
cells and restoration to health. 
Six days after this, that is, on the 19th, I very carefully 
examined this dog’s blood myself, and found nothing 
abnormal, none of the white corpuscles exceeding ya of 
an inch in diameter. : 
The remaining snake I kept constantly before the fire. It, 
not eating, afforded avery good illustration of heat being | 
converted wmto motion, for it became very lively, and bit a 
kitten in the foot one afternoon at halt-past three o'clock. 
The kitten died at ten minutes past-seven the same evening. 
On examination the lungs were not congested. The blood 
was everywhere dark and fluid; some taken from the in- 
