82 On the Condition of the Blood 
and on examining the poison—of which there was little more 
than a trace—found the same free nuclei with nucleoli as in 
the other, with only here and there an indication of a 
maculated cell like those seen in the blood. Mr, Lawrence 
thought he saw one or two, but it is extremely difficult to 
tell these cells from the serpent’s blood-corpuscle, which 
may have become round by being placed.in fluid. In the 
strange cell the nucleus is larger and the macula also. 
They were so in the cells pomted out by Mr. Lawrence, but 
to clear up this point I must wait till next summer. I may 
mention that a week before this, the snake being very lively, 
I let it bite a pigeon and a rat, which it did savagely and 
shook them, but not the least harm resulted to either. 
To return to the poison, a minute quantity was inserted 
into the thigh of a rat; it died in one hour. 
The examination of this blood was made by Mr. Ashworth, 
another member of my class, and his observations were con- 
firmed the same evening by ‘myself, , 
The blood was everywhere fluid. The following are Mr. 
Ashworth’s words :— 
“The large nucleated cells were readily seen if caren 
looked for in-the uncoloured blood (2.¢., without magenta 
dye), the large cells being three times the diameter of the 
red corpuscles. 
“In the femoral vein of the injected leg were many of 
the cells and free nuclei, the latter mostly circular, some 
oval, of a diameter of ls of an inch, the exact size, shape, 
&ec., of those of the poison nuclei of the serpent’s venom.* 
“The blood in the vena cava and vertebral veins contained 
the same cells and nuclei. 
“Tn the lungs the same cells were found in addition to a 
large number of white corpuscles.” 
* T may mention that in all the cases recorded in this essay in which the 
iden cells were seen, accurate drawings were made either by Mr. Lawrence, 
Mr. Ashworth, or by myself. These were shown at the meeting, and 
enlarged drawings made from them by Mr. Morton, whom I have to thank 
for his invariable readiness to assist me with his pencil. : 
