51 
DEATH TO INSECTS. 
Have no more Insects in your Mill. Puma Carbon Bisulfide 
does the Work. 
Please read the following letters from those who have used it, also 
Bulletin 58, Agricultural College of Michigan. 
Messrs. A. WILHELM & SONS, Defiance, Ohio, write : 
E. R. Taylor, 
Dear Sir : — Your last dose of three 50-pound cans of your 
Bisulfide settled the weevil family in our mill, and we had our mill 
so full that we were about giving possession. Thanks to your 
Bisulfide. We have referred our neighbors to you for relief. Mill 
60x70, four stories. A. WILHELM & SONS. 
EXTERMINATING GRAIN WEEVIL. 
Editor American Elevator and Grain Trade: — I notice in the 
June number of the American Elevator and Grain Trade 
that “Sangamon” asks in No. 65 of “Queries and Replies" for infor- 
mation regarding the use of Carbon Bisulfide as a means of exter- 
minating insects in grain. Having had practical experience in this 
matter, I think I can give him some points about it that may be of 
use to him. 
In the first place he asks how much should be used. For a 
wheat bin full of grain use \ '/ 2 pounds per ton of grain in order to 
make certain. When the biu is empty use about one pound to 1,000 
cubic feet of space. For instance, in the case of a bin 20x20x20 feet 
as given by “Sangamon,” about eight pounds would be needed. A 
small room 10 feet each way would by the same rule require one 
pound. 
As to the cost at wholesale, I would say it can be purchased in 
50 pound cans for 15 cents per pound. However, a much cheaper 
rate can be had from the manufacturer. Edward R. Taylor, a chemist 
of Cleveland, O., sent me on my order 100 pounds for $10.00. 
This Carbon Bisulfide will kill all kinds of insects, bugs and 
beetles, and when thoroughly applied will destroy every one of them 
in the building, no matter where hidden. It is not so injurious to 
human life as some other vapors, but it is explosive when mixed 
with air, and therefore great care should be taken not to bring any 
kind of a light near while it is being applied. It evaporates so 
quickly that it can be thrown on any grain without injuring it in 
any way. 
The vapor of Carbon Bisulfide is heavier than that of air, and it 
naturally follows that when the liquid is thrown on grain, its vapor 
