UNITED STATES DEPARTMENT OF AGRICULTURE 



„% BULLETIN No. 888 



Jml^Sx^il^* Contribution from the Bureau of Entomoloirv <. 





Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



October 13, 1920 



RESULTS OF EXPERIMENTS WITH MISCELLANE- 

 OUS SUBSTANCES AGAINST CHICKEN LICE AND 

 THE DOG FLEA. 



By W. S. Abbott, Entomologist, Enforcement Insecticide Act. 



CONTENTS. 



Page. 



Introduction 1 



Chicken lice 2 



Methods of testing 2 



Oil preparations used as sprays 2 



Oil preparations used as fumigants 3 



Oil preparations applied to roosts, drop- 

 ping boards, and interior of chicken 



houses 4 



Mercurial ointment 4 



Chicken-lice powders 5 



Miscellaneous p reparations 5 



Pyrethrum powder 5 



Tobacco powders 6 



Naphthalene 6 



Miscellaneous powdered materials 6 



Summary 7 



Recommendations 8 



Page. 



The dog flea 9 



Methods of testing 9 



Pyrethrum powder 9 



Naphthalene 10 



Chicken-lice powders 11 



Miscellaneous powdered mixtures 11 



Miscellaneous powdered materials . . 11 



Tobacco powders 12 



Sprays 12 



Washes 13 



Dips 13 



Liquids used as fumigants 13 



Summary 14 



Recommendations 15 



INTRODUCTION. 



In connection with the enforcement of the insecticide act of 1910 a 

 large number of proprietary insecticides and the ingredients entering 

 into their composition have been tested against chicken lice and the 

 dog flea. These experiments have been briefly summarized and form 

 the basis of this bulletin. 



This work was done at the Insecticide Board's testing laboratory, 

 located at Vienna, Va., which is under the supervision of Dr. A. L. 

 Quaintance, of the Bureau of Entomology, and under the direct 

 charge of Mr. E. W. Scott. 1 



Assistance was also rendered at different times by Messrs. W. F. 

 Turner, J. F. Zimmer, and W. B. SiU. 



Resigned July 15, 1919. 



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