53 
glycerine. The dose of this has been run up to fourteen 
grains. This is often partially vomited. In such cases 
no worms or eggs have been found in the vomitus. 
In spite of these large doses a few eggs persisted in the 
droppings. These might have been cast off from dead 
and decadent worms partly imbedded in the wall of the 
proventricle. The bird is more sleek at present than 
before medication. 
Thymol was also administered to an unadorned 
Amazon : — 
November 3d, 1911. — 1 grain thymol. 
November 6th, 1911. — Only two eggs in a smear. 
November 11th, 1911. — 13^ grains thymol. 
November 22d, 1911. — Ova still present. 
November 28th, 1911. — Dead from pneumonia. Pro- 
ventricle contained enormous numbers of living worms. 
It would seem from the above that the worms had 
penetrated deeply into the wall of the organ and escaped 
the action of the thymol. 
More exact work was done with thymol when a bird 
with great numbers of eggs was found. 
Great white-crested cockatoo. 
Ova averaged for five days 182,000 per day. 
February 14th, 1912. — 8 Gr. thymol in glycerine. No 
worms in droppings February 15th or 16th. 
February 16th, 1912. — 12 Gr. thymol in glycerine. 
February 18th, 1912. — Droppings of two previous days 
smelled strongly of thymol. Found two large, gravid 
female worms, dead, translucent on account of the 
glycerine and not easily detected in the washed and 
strained droppings. There were doubtless some males 
passed, but on account of their smaller size and greater 
delicacy they could not be detected. 
February 19th, 1912. — One gravid female, dead. 
February 24th, 1912. — No ova whatsoever in droppings 
of February 20th, 21st, 22d, 23d. 
March 6th, 1912.-288,000 eggs passed on March 5th. 
March 13th, 1912.— 16 Gr. thymol in glycerine. 
