(/) Storing can be done between thi'ck layers of well dried 

 neem leaves^ or in tarred vats lined completely with dry straw. 

 (g) Napthaline powder, half a tea-spoonful for every 10 cubic 

 feet of space once every 15 or 20 days, or i ounce to every 

 100 bushels of grain, also keeps out insects, (k) Carbon-bi- 

 sulphide, however, is the best substance to use for protecting 

 grains stored in godowns. The gas of Carbon-bisulphide being 

 heavy, sinks and the liquid can be thrust into the grain-store 

 from the top. The use of a Quarantine bin is recommended by 

 Mr. L. O. Howard of the United States Department of Agri- 

 culture. Into this all seeds and grains are put in bags as they 

 come in and are disinfected by Carbon-bisulphide, before they 

 are stowed away. The quantity of Carbon-bisulphide used being 

 i \ Ibs. for every ton of seed or grain, (i) Hymenopterous 

 insects belonging to the order Chalcididae prey upon and des- 

 troy insects injurious to grains and their presence in godowns 

 should be encouraged. (/) Salted sacks, i. e. } sacks dipped 

 in a ten per cent, solution of common salt, and afterwards dried, 

 have been found very useful in keeping out weevils from 

 grains stored in them, (k) For small quantities of vegetable 

 and other seeds that may be easily stored in bottles, a drop 

 or two of mercury shaken up with the grains in the bottles, 

 arc found most useful in keeping out insects. Mercury 

 should not be used for storing grains meant for food and not 

 for seed. Carbon-bisulphide can be had of Messrs. Waldie 

 & Co. of Calcutta for 12 annas a Ib. in quantities of 10 Ibs. 

 or more. 



1,154. For boring insects and other pests which can be 

 reached only by smoke or gases, Hydrocyanic acid gas may 

 be used by means of a pair of patent vaporising bellows. 

 This gas is generated by using i ounce of Potassium Cyanide 

 with i ounce of Sulphuric acid and 3 ounces of water placed 

 in the glazed receiver of the bellows. The gas generated 

 by the above quantities will be sufficient for 150 cub. ft. of 

 space. Sometimes tents are erected over valuable shrubs and 



