16 BULLETIN 893, U. S.. DEPARTMENT OF AGRICULTURE. 
As an insecticide, the effect of cyanogen chlorid is practically the 
same as that of hydrocyanic acid. Its disadvantages are its injurious 
effect on plant life, low boiling point, slightly corrosive action on 
metals, and severe lachrymosal effect. Its advantages are that it is 
active as a fumigant, is easily detected, is not mjurious to seeds in 
doses which are toxic to insects and fungi, and is no more toxic 
toward human beings than hydrocyanie acid. It is safer to use than 
hydrocyanic acid, because it can be detected in lower concentrations.’ 
More experiments on the fungicidal aspect are necessary to work out 
in greater detail the methods of its use. Since it is a dry gas and 
does not injure the seeds, its use would offer a decided advantage 
over the present method of treatment for fungi, whereby the seeds 
are moistened, which sometimes causes germination before it is 
desired. 
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WASHINGTON : GOVERNMENT PRINTING OFFICE ; 1926 
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