Contents 



berculosis, 69; possibility of their carrying other diseases, 70; 

 Fighting flies, 7 1 ; screens not sufficient, 7 1 ; the larger prob- 

 lem, 71; the manure pile, 72; outdoor privies, 72; garbage can, 

 72; cooperation necessary, 72; city ordinances, 73; an expert's 

 opinion of the house-fly, 73; Other flies, 75; habits of several 

 much the same but do not enter house as much, 75; the small 

 house-fly, 75; stable-flies, 75; these may spread disease, 75. 



CHAPTER VI 



Mosquitoes * 



Numbers, 76; interest and importance, 76; eggs, 77; always 

 in water, 77; time of hatching, 77; Larva, 78; live only in wa- 

 ter, 78; head and mouth-parts of larvae, 78; what they feed on, 

 78; breathing apparatus, 79; growth of the larvae, 80; Pupce, 

 80; active but takes no food, 80; breathing tubes, 80; how the 

 adult issues, 81; The Adult, 81; male and female, 81; how mos- 

 quitoes "sing" and how the song is heard, 82; the palpi, 82; 

 The Mouth-parts, 83 ; needles for piercing, 83 ; How the mos- 

 quito bites, 84; secretion from the salivary gland, 84; why males 

 cannot bite, 84; blood not necessary for either sex, 84; The 

 Thorax, 85; the legs, 85; the wings, 85; the balancers, 85; the 

 breathing pores, 86; The abdomen, 86; The digestive system, 

 86; The salivary glands, 87; their importance, 87; effects of a 

 mosquito bite, 87; probable function of the saliva, 88; How 

 mosquitoes breathe, 89; Blood, 90; in body cavity, 90; heart, 90; 

 Classification, 91; Anopheles, 91; distinguishing characters, 92; 

 eggs, 92; where the larvae are found, 93; Yellow fever mosquito, 

 94; its importance, 94; the adult, 95; habits, 95; habits of the 

 larvae, 95; Other species, 96; some in fresh water, others in 

 brackish water, 96; Natural enemies of mosquitoes, 97; how 

 natural enemies of mosquitoes control their numbers, 98; mos- 

 quitoes in Hawaii, 98; Enemies of the adults, 99; Enemies of 

 the larva and pupa, 100; Fighting mosquitoes, 101; fighting 

 the adult, 102; Fighting the larva, 103; domestic or local 

 species, 104; draining and treating with oil, 104; combatting 

 salt-marsh species by draining, 105; by minnows or oil, 105. 



