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karpur}) camphor, mustard oil, borax, arsenic, mint, lemon, 

 butter milk, pepper, vinegar, etc. Any one or more of these 

 substances can be easily procured in any part of the country, 

 and one or more can be used according to local convenience. 

 Of these, corrosive sublimate, arsenic and quinine, are very 

 poisonous and should not be used at all without veterinary 

 advice or used only in very minute quantities. No better 

 germicidal substances can be named, which may be commonly 

 used, than mustard oil, lime juice, sulphate of iron and 

 vinegar. A substance is protected from most putrefactive 

 germs if mustard oil is mixed with it in proportion even so low 

 as i to 2,000. Mustard oil should not be confounded with colza 

 or rape oil which is in common use for culinary and other 

 purposes; but ordinary Indian mustard oil in larger propor- 

 tion is effective. The use of mustard oil and fresh lime juice 

 and sour milk as common accessories to rice meal cannot be 

 too highly spoken of. Gowdlds in Bengal speak of their de- 

 riving some benefit from mustard oil, sour milk and pepper in 

 cattle plagues. 



(h) When an animal or plant dies of an infectious 

 disease, it should be dipped in sulphate of copper solu- 

 tion before putting it to use as manure, etc. The ani- 

 mals that die in M. Pasteur's laboratory are thrown into 

 a vat of sulphate of copper solution. They are removed 

 by farmers for use as manure after they have been in the 

 vat for only 24 hours. This treatment of carcases contain- 

 ing germs of most deadly diseases prevents their doing harm 

 by the spread of infection. If anthrax vaccine or any other 

 fluid containing pathogenic germs is accidentally spilt in this 

 laboratory a little of the sulphate of copper solution is spread 

 or sprinkled on the spot which makes the spilt liquid quite 

 inoccuous. A list of germicides including the proportion 

 which usually suffices to kill the germs or inhibit their growth 

 in each case, is given below. The same proportion is not 

 applicable in the case of every germ and it is safest to use a 

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