FUMIGATION WITH CARBON BISULPHID 275 



desirable to fumigate large bulks of grain, etc. , a.s soon 

 as possible after it is put in store. This is especially 

 true of wheat, corn, peas, and beans, particularly those 

 to be used for propagating purposes later. L,arger 

 warehouses or granaries can be successfully treated if 

 the directions cited above are followed. With large 

 bulks of grain the vapor may be left for two or three 

 days, or even longer. 



Stimulating effects on plants. It is an acknowledged 

 fact that the growth of plants on soil following treat- 

 ment is unusually good. Treatment of a corn-field 

 yielded an increase of 46.8 per cent, in the grain and 

 21.73 P er cent, in the stover. Potatoes showed an 

 increase in weight, varying from 5.3 per cent, to 38.7 

 per cent. In a series of experiments upon corn, oats, 

 beets, potatoes, and clover, much the same results 

 were obtained, but the most marked increase was in 

 the clover. It was found that the vapor was not 

 detrimental to the active bacteria causing the nodules 

 upon the roots of this legume, but rather seemed to 

 favor their multiplication. Furthermore, it was found 

 upon these same plats that the beneficent influence of 

 the treatment was quite apparent the following year, 

 though less marked than it had been the first year. 



EffeEl upon fruit. Recently an Italian investigator, 

 M. F. Sestini, has determined the effect of carbon bi- 

 sulphid upon fresh fruits. His conclusions are as fol- 

 lows: One volume of carbon bisulphid evaporated in 

 10,000 volumes of air produces no alteration in the 

 character of the fruit during an exposure of twenty- 

 four hours. After the treatment flavor is normal and 



