28 PUBLICATIONS OF BUREAU OF ENTOMOLOGY. 
5ist Cong., 2d sess., H. Ex. Doc. 203; serial No. 2868. Letter from Secretary of 
Agriculture, transmitting statement of all purchases of cocoons and all sales 
of silk and silk waste during the fiscal year ending June 30, 1890. Also the 
reports of the ladies’ silk culture society of California and the women’s silk 
culture association of the United States. pp. 25. January 24, 1891. Out of 
print. 
PUBLICATIONS OF THE BUREAU OF CHEMISTRY PREPARED IN 
COLLABORATION WITH THE BUREAU OF ENTOMOLOGY. 
BULLETINS. 
No. 68. The chemical composition of insecticides and fungicides, with an 
account of methods of analysis employed. By J. K. Haywood. pp. 62. 1902. 
Price 5 cents. Postage 3 cents. 
No. 76. Insecticide studies. I. Pyrethrum powders containing poisonous metals. 
II. A compilation of analyses of insecticides and fungicides. III. State laws 
governing the composition and sale of insecticides. By J. K. Haywood. pp. 
63. 1903. Price 5 cents. Postage 3 cents. 
No. 82. Paris green spraying experiments. By J. K. Haywood. pp. 32, pls. 2. 
1904. Price 5 cents. Postage 2 cents. 
No. 101. The lime-sulphur-salt wash and its substitutes. By J. KX. Haywood. 
pp. 29. Issued February 28, 1907. Price 5 cents. Postage 2 cents. 
CIRCULAR. 
No. 10. Methods for the analysis of insecticides and fungicides. By J. K. 
Haywood. pp. 8 March 7, 1902. 
Approved : 
JamES WILSON, 
Secretary of Agriculture. 
Wasuineton, D. C., November 22, 1907. 
[Cir. 76] 
O 
