233 



and drop into the top of the bamboo about half a teaspoon of 

 naphthalene powder. The bamboo can then be drawn out, as 

 the naphthalene is safe at the bottom of the bulk of grain. If 

 the bulks are large this should be done once to every 10 feet 

 square of the bulk. Repeat the application every 15 or 20 days 

 as the powder evaporates. 



The weevil that can leave the grain will do so, and those 

 that cannot leave, are killed by the odour of the naphthalene. I 

 do not believe that naphthalene thus used can cause any injury 

 whatever to grain. For seed purposes the germinating powers 

 appear not to be affected in the least. For marketable grain the 

 colour is not affected, and the odour will leave in a short time if 

 fresh naphthalene is not applied to it. The quantity of powder 

 used is infinitely small in proportion to the quantity of grain, and 

 the powder is entirely destroyed by evaporation, so that for food 

 purposes the food is nil. 



Naphthalene powder can be procured at the Medical Halls in 

 Rangoon at Rs. 2. 8. per ounce, and a few ounces of it will be 

 sufficient for one season for any grain dealer in Burma. 



P. W. CABANISS. 



The Government of India in 1887 appears to have directed ex- 

 periments to be made as to the efficiency of the method recom- 

 mended by Professor Church. The following report appears to 

 show that it is well adapted to meet the difficulty of India. 



EXTRACTS from Annual Reports of the Experimental Farms at 

 BHADGAON in KHA'NDESH. and HYDERABAD in SlND, for 

 year ending 31st March, 1889. 



In pursuance of Government Resolution No. 6093, elated 9th 

 September, 1887, Revenue Department, experiments were made to 

 test the efficacy of CS 2 as a preservative of grain from the attack 

 of weevils, and upon which a separate report was submitted in 

 August last. The observations were continued this year. 



A summary of the results of the experiment is given below:— 



(a) That soft varieties of grain, such as soft wheats and 



jowari, are sooner attacked with weevils than hard 

 varieties, as bansi wheat, bajri, &c. 



(b) The CS 2 is a perfect preservative against the attack of 



weevils upon grain. 



(c) The action of CS 2 lasts in cases not hermetically closed 



six weeks, after which period a fresh charge of . the 

 re-agent is required. 

 ■(d) That even in samples which have been attacked with 

 weevils the effect of CS 2 is immediately felt, the weevils 

 disappearing en masse. 



(e) That CS 2 does no harm to grain as regards its colour, 



smell, cooking properties, &c. 



(f) That the poisonous property of CS 2 need in 10 way 



interfere with its introduction into Indian as 



unlike arsenic, its strong and repugnant smell will act as 

 a sufficient safeguard. 



(g) With the dismantling of the old granary, whi< ■ used 



