280 DISEASES OF DOMESTICATED BIRDS 
(4) May 27, 1918, 10 a.m. Gave fowl 1.4 grains of bichloride 
of mercury in feed. Fowl had not been fed for 24 hours, crop nearly 
empty. 8 p.m. Gave fowl another 1.4 grains of bichloride of 
mercury in feed. Result. No effect was apparent as a result of 
fowl consuming 2.8 grains of bichloride of mercury in feed in one 
day. 
(5) June 14, 1918. Gave three fowls a 1-6000 solution of bi- 
chloride of mercury as drinking water. Fowls drank solution for 
a period of 18 days consuming about 2500 cc. each. No other 
water was given. Result. No effect was apparent. 
(6) June 12 to 14, 1918. Several fowls which had not received 
drinking water for 24 hours were given bichloride of mercury solu- 
tions of 1-2000 and 1-4000 as drinking water. Fowls tasted solu- 
tions and refused to drink. Solutions were clear. At intervals the 
solutions were again placed in the fowls’ cages with the same result 
as above. After taking 1 to 3 swallows of solution the fowl shakes 
its head, rubs beak in the litter and elevates the feathers on the neck 
for a few moments. Gave fresh water and fowls drank eagerly. 
Ward, adopting a suggestion by Ritzler, employed corrosive sub- 
limate in the drinking water of a large flock of birds during an out- 
break of fowl cholera, without harmful result. The period during 
which the sublimate was used to disinfect the water covered 16 
days. or the first two days a solution of 1: 1000 was employed. 
Since the fowls did not drink the solution readily, the bichloride was 
diluted to 1 part to 2000 parts of water. 
BISMUTH SUBNITRATE 
Non-toxic dose. % ounce -+ 
Experiment. (1) February 20, 1918, 9.50 a.m. Fowl received 
7% ounce of bismuth subnitrate. Result. No effect was apparent. 
CALCIUM OXIDE (QUICKLIME) 
Toxie dose. 1% drams. 
Non-toxic dose. % dram. 
Experiments. (1) August 15, 1918, 9.40 a.m. Gave 3 pound 
fowl 1% drams of calcium oxide. August 16. Fowl is somewhat 
droopy. Droppings are greenish in color. August 17. Fowl is 
dull in appearance. August 18. Fowl is dull in appearance. 
August 19. Fowl appears normal. 
