COCKROACHES 143 



quently and at short intervals. Persistence and thorough- 

 ness are absolutely essential to the successful control of 

 cockroaches. 



REFERENCES TO ECONOMIC LITERATURE ON COCKROACHES 



1882. LINTNER, J. A. Remedy for the cockroach. First Rept., 



N. Y. Ins., p. 343. 

 1888. RILEY, C. V. Injury done by roaches to the files in the 



Treasury at Washington. Insect Life, Vol. I, p. 67. 



1895. HOWARD, L. O. Migration of cockroaches. Insect Life, 

 Vol. VII, p. 349. 



1896. SEISS, C. F. The breeding habits of Periplaneta orientalis. 

 Ento. News, Vol. VII, pp. 148-150. 



1896. BUTLER, A. E. Household insects, pp. 116-146. 

 1896. MARLATT, C. L. Household insects. Bull. 4, Bu. Ent., 

 U. S. Dept. Agri., pp. 84-95. 



1896. BECKWITH, M. H. A remedy for cockroaches. Eighth 

 Ann. Rept. of the Del. Expt. Stat., p. 114.' 



1897. LUGGER, OTTO. The Orthoptera of Minnesota. Bull. 55, 

 Minn. Expt. Stat., pp. 177-187. 



1902. MARLATT, C. L. Cockroaches. Circ. 51, s.s., Bu. Ent., 

 U.S. Dept. Agri., pp. 1-15. 



1903. WASHBURN, F. L. Experiments with cockroaches. Eighth 

 Ann. Rept. of the State Ent. of Minn., pp. 162-163. 



1903. HOULBERT, G. Les insectes ennemis des livres, pp. 127- 

 150. 



1904. SURFACE, H. A. Remedies for cockroaches. Ann. Rept. of 

 the Penn. State Dept. Agri., for 1903, p. 175. 



1905. URITTON, W. E. Books injured by cockroaches. Fourth 

 Rept. of the State Ent. of Conn., p. 215. 



1905. KELLOGG, V. L. American insects, p. 126. 



1906. WASHBURN, F. L. Cockroaches. Eleventh Ann. Rept. 

 of the State Ent. of Minn., p. 72. 



1907. COMSTOCK, J. H. Manual for the study of insects, p. 106. 



