316 HOUSEHOLD INSECTS 



For the head louse, sulfur ointment and white precipi- 

 tate are commonly used. If desired, the hair may be cut 

 and the head subjected to an application of kerosene. 

 This will kill the lice, but may not destroy all of the eggs. 

 The kerosene should not be allowed to remain too long on 

 the scalp. 



A 2 per cent carbolic solution may be used and is said to 

 be effective against the eggs ("nits"). Washing with a 

 tincture of Cocculus indicus is advised by some writers, 

 the principal recommendation being the absence of odor. 



The crab louse will succumb to the persistent use of 

 mercurial ointment. 



REFERENCES TO ECONOMIC LITERATURE ON THE HUMAN LICE 



1869. WALSH and RILEY. The American Entomologist, Vol. 1, 



pp. 84-86. 

 1884. UHLER, P. R. Standard natural history, Vol. II, p. 209. 



1895. RAILLIET, A. Traite de zoologie medicale et agricole, 

 p. 825. 



1896. BUTLER, E. A. Our household insects, p. 325. 



1896. OSBORN, H. Some insects affecting domestic animals. 



Bull. 5, Bu. Ent., U. S. Dept. Agri., p. 165. 

 1907. STILES, CHARLES W. The zoo-parasitic diseases of man. 



Osier's Modern Medicine, Vol. 1, pp. 634-635. 

 1910. RICKETTS, H. T., and WILDER, R. M. The transmission 



of typhus fever of Mexico (tabardillo) by means of the louse 



(Pediculus vestimenti). Jr. Amer. Med. Assoc., Vol. 54, pp. 



1304-1307. 



