PREVENTIVE MEASURES 
199 
of manure daily; the larger work horses produce twenty 
to thirty pounds per day, but, as they are out of the 
stables most of the time, the actual amount to be treated 
would be much less. The average cost of the treat¬ 
ment would be one and one-half to two cents per horse 
per day. It is stated also that iron sulphate has the ad¬ 
vantage that it completely deodorizes the manure. 
Experiments were also made under Forbes’s direc¬ 
tion with borax, with a mixture of sodium arsenate and 
borax, with a lime-sulphur solution, with salt, and with 
carbon bisulphid. It was found that a solution of thir¬ 
teen ounces of borax to three-fourths of a gallon of 
water sprayed over fifteen pounds of infested manure 
destroyed over ninety-nine per cent, of the maggots. A 
gallon of water containing eleven and one-half ounces 
of borax and seven ounces of sodium arsenate applied 
to twelve pounds of manure killed all of the larvae. A 
pint of lime-sulphur solution in a gallon of water ap¬ 
plied to twelve pounds of manure killed eighty-six and 
four-tenths per cent, of the larvae, while a pound and 
a half of salt to one gallon of water applied to twelve 
pounds of manure killed eighty-eight and eight-tenths 
per cent. 
A fluid ounce of bisulphid of carbon evaporated in a 
closed box fourteen inches by fourteen inches by nine 
inches, containing twelve pounds of manure, destroyed 
ninety-nine per cent, of the larvae. 
Whenever the subject of treating manure, in order 
to kill the maggots which are living in it, is mentioned, 
the question arises: What effect will the treatment have 
