58 AGRICULTURE. 



2. Crude cotton-seed oil, or fish oil, lOO parts. Crude 

 carbolic acid, 3 parts. 



In either case these substances are to be mixed, and ap- 

 plied rather lightly to the cattle by means of a wide pairt 

 brush, a sponge, or even a woolen cloth; the combination 

 immediately drives off the flies, and remains on in condi- 

 tion to keep them off for about five days. A combination 

 of kerosene emulsion and tobacco decoction may also be 

 used with good effect. 



LIST OR DISINFECTANTS. 



(Sternberg.) 



The most useful agents for the destruction of spore- 

 containing infectious material are: 



1. Fire. — Complete destruction by burning. 



2. Steam under Pressure^ 105° C. (221° F.,) for ten minutes. 



3. Boiling in Water for half an hour. 



4. Chlorid of Lime (should contain at least 25 per cent of 

 available chlorin). — A 4 per cent solution. 



5. Mercuric Chlorid. — A solution of 1-500. 



For the destruction of infectious material which owes 

 its infecting power to the presence of micro-organisms not 

 containing spores, any of the following agents are recom- 

 mended: 



1. Fire. — Complete destruction by burning. 



2. Boiling in water for ten minutes. 



3. Dry Heat, no" C. (230" F.), for two hours. 



4. Chlorid of Lime. — A 2 per cent solution. 



5. Solution of Chlorinated Soda (should contain at least 

 3 per cent of available chlorin).— A 10 per cent solution. 



6. Mercuric Chlorid. —A solution of I-2000. 



7. Carbolic Add. — A 5 per cent solution. 



8. Sulfate of Copper. — A 5 per cent solution. 



9. Chlorid of Zinc. — A lO per cent solution. 



10. Sulfur Dioxid (this will require the combustion of 

 between 3 and 4 lbs. of sulfur for every 1000 cubic feet 

 of air-space). — Exposure for twelve hours to an atmos- 

 phere containing at least 4 volumes per cent of this gas, in 

 presence of moisture. 



