II. A COMPILATION or ANALYSES or INSECTICIDES AND 



FUNGICIDES/ 



INTRODUCTION. 



In a recent publication 8 of the Bureau of Chemistry analyses <>t' all 

 the insecticides and fungicides that could he obtained on the American 

 market were o-iven. together with such remark- concerning their etlWt- 

 iveness as the re-nlt- -ecmed to justify. It was originally intended 

 that all of the analyses which had previously heen made by the various 

 experiment stations should he included iii that bulletin. By rea><>n. 

 however, of unavoidable delays, two years passed between the time of 

 collecting the samples and the time of completing the analyses. Since 

 results of this kind, to he of the most value, should be published at 

 once, it was thought desirable to reserve the compilation of results 

 obtained in the various States for a future publication. This article- 

 therefore includes a compilation of analyses of insecticides and fungi- 

 cides made bv the various experiment stations, together with a few 

 analyses made by the Bureau of Chemistry since the publication of 

 Bulletin i.s. 



The insecticides are arranged in oT<>ups. as in the previous bulletin, 

 with the addition of two or three <-las<r> not taken up in that publica- 

 tion, and the omission of a few classes not examined by the experi- 

 ment stations. They will be considered in the following order: (1) 

 Paris o-reens: ('2) London purples; (">) insecticides and fungicides, other 

 than Paiis greens and London purples, that contain arsenic, copper, 

 or both: (4) soaps: (.') lyes: ('.) hellebores: (7) mixtures containing 

 borax: (N tobacco extract.-: (!) formalins: (in) petroleums: (11) mis- 

 cellaneous solid insecticides and fungicides, and 111') miscellaneous 

 liquid insecticides and fungicides. 



SOURCES OF ANALYSES AND DESCRIPTION OF SAMPLES. 



Table I. on the following pao-<^. is introduced to show the publica- 

 tions from which the analyses were taken anjd, when possible, the names 



of the manufacturers of the various compounds. 



" Xo responsibility is assumed l>y tin- Drpartment for the correctness of compiled 

 analyses, not made within the Department itself. 



''U. S. Dept. Agr., Him an of Chemistry I'.ul. US. The Chemical Composition of 

 Insecticides and Funiricides. 



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