ACORN-POISONING. 135 
In the illustration the effects of a solution of tannin and 
solution of acorns are shown. 
Different effects produced by adding a drop of solution of tannin ; and solution 
of acorns to healthy blood. 
A. Development of buds from the surface of the red discs after the addition 
of tannic acid. 
B. Change in the form of the blood-discs after the addition of a drop of 
water in which acorns had been steeped. 
Very slight effects were produced upon the form of the white 
corpuscles by either agent, and the water in which boiled 
acorns had been steeped caused no other change than that 
which follows the addition of water to blood — the red discs 
became globular, very transparent, and ultimately nearly dis- 
appeared. 
Blood wffiich was taken from animals fed on acorns did not 
present any indications of the condition which is caused by 
tannic acid ; in one instance, the red discs were found to 
be distorted in form, presenting something of the appear- 
ances indicated at B in the illustration. 
Milk was only examined in one instance, in consequence 
of the difficulty of obtaining specimens. Comparatively few 
cows were attacked, and the secretion of milk in them ceased 
almost immediately. The specimen referred to was taken 
from a four-year-old cow, which had been ill for some days ; 
only a few drops could be obtained, and under the microscope 
the fluid was found to contain a quantity of the large granular 
cells which are met with in the milk of cows affected with 
cattle plague, pleuro-pneumonia, and foot-and-mouth disease. 
The mucous discharge from eyes and nostrils contained a 
