21 



SIMPLE RULES FOR SAFE STORAGE AND HANDLING. 



•• 1. Keep it in the special iron drums, or, if in small quantity, 

 in stoppered bottles. See that the stoppers are tight." 



"" 2. Store in a dark, cool place, preferably an outside store, where 

 fire or light will not have access to the liquid." 



"• .'{. In pouring out a supply, take care that no llaine or even a 

 lighted cigar or pipe of tobacco is near. Arrange to have the vapour 

 ;i> low as possible so as to avoid breathing it." 



INSTRUCTIONS FOE USE. 



" For the destruction of insects in the soil, root-borers and ants, 

 as well as for sterilizing soil in which seeds or plants liable to injury 

 from insects are to be raised carbon bisulphide is an effectual agent." 



" (a) Boot-borers : The liquid itself is destructive to any root 

 brought into contact with it. The vapour, however, in regulated 

 quantity is harmless to roots and highly destructive to insect life in 

 the soil. Hot, dry, sandy soils should only be treated when they have 

 been thoroughly moistened with rain or irrigation water. As a general 

 rule, it is desirable in all cases to use carbon bisulphide when the soil 

 is still damp, since its action is thereby better controlled and regulated. 

 Bore holes at the rate of four per square yard to a depth of 12 inche. 

 No hole should be within 1 8 inches of the tree trunk. Pour £ oz. of 

 the liquid down each hole. Special appliances are sold for this pur- 

 pose enabling two men to make 2,000 injections per diem. For 

 occasional use, the holes should be made with a crowbar and the 

 liquid poured down an iron tube. The earth should be trampled over 

 the hole after treatment. In some cases the holes should slope toward 

 the tree trunk so as to reach insects under the central point. 



" (b.) Ants: When the nest has been located, bore two or more 

 holes to a depth of 1 to 2 feet in the centre of the nest and pour 2 oz. 

 of bisulphide down each hole. Close the hole with earth immediately 



" (c.) Borers in trees : Where the sawdust and castings indicate 

 an active borer at work, inject a little bisulphide with an oil-can into 

 the hole and stop the opening with clay. 



" (d) To sterilize soils for seedlings and delicate pot plants: Place 

 the soil in a suitable box or tin with a close fitting lid. Pour on 1 oz. 

 of bisulphide per bushel of soil ; after two days, spread the soil out in 

 the open air. All insect life in the soil will thus have been destroyed. 

 This treatment is found not to injure in any way the fertility of 

 the soil. 



" (e.) To disinfect a granary : Where large quantities of grain 

 are stored in a building and serious losses through weevils and other 

 insect pests occur, it is a great advantage to treat the whole building 

 with carbon bisulphide. To do this certain obvious precautions are 

 necessary : — 



" (1.) The building must be made fairly tight. Ventilators 

 must be papered over and doors made to shut close. 



" (2.) Preparations must be made so that a number of men can 

 enter the granary simultaneously, each to pour out in a 

 prepared receptacle the requisite dose of bisulphide and 



