Vlll TABLE OF CONTENTS 



CHAPTER VI 



PAGE 



Insects of the Household 57 



Silver fish (57). Cockroaches (57). Ants (58). Cheese 

 skipper (59). Meal worm (60). Carpet beetle (60). Clothes 

 moth (60). 



CHAPTER VII 



Beneficial Insects ......... 62 



Silkworm (62). Honeybee (63). Cochineal, lac, etc. (65) 

 Food for man (67). Scavengers (67). Pollinization of 

 flowers (68). Predaceous insects (70). Parasitic insects 

 (70- 



CHAPTER VIII 



The House Fly and Disease ...... 73 



Disease germs (73). Bacteria (73). Germ diseases trans- 

 mitted by house flies (77). Typhoid fever (78). Dysentery 

 (78). Tuberculosis (79). Asiatic cholera (79). Other dis- 

 eases (79). Methods of control (80). Breeding habits of 

 house flies (80). Enemies of house flies (81). Prevention 

 of breeding (82). Prevention of distribution of germs (83). 

 Control by department of health (84). Example of a city fly 

 campaign (85). 



CHAPTER IX 



Mosquitoes and Disease ....... 86 



How germs are carried (86). What the germs are (86). 

 The Malarial Mosquito (87). Anopheles the guilty 

 mosquito (88). Losses due to malaria (89). Breeding habits 

 of anopheles (90). Enemies of mosquitoes (90). Control of 

 mosquitoes (90). Example of mosquito control (92). Driving 

 away mosquitoes (92). The Yellow Fever Mosquito 

 (93). Control in New Orleans (93). Control in Panama Canal 

 Zone (94). Control by school children (95). Mosquitoes 

 and other diseases (96). 



