ter they have had the
disease, 65; how the flies get these on their body and distribute
them, 66; results of some observations and experiments, 66;
_Flies and other diseases_, 68; flies and cholera, 68; flies and
tuberculosis, 69; possibility of their carrying other diseases, 70;
_Fighting flies_, 71; screens not sufficient, 71; the larger problem,
71; the manure pile, 72; outdoor privies, 72; garbage can,
72; cooeperation 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 76

Numbers, 76; interest and importance, 76; eggs, 77; always in water, 77;
time of hatching, 77; _Larvae_, 78; live only in water, 78; head and
mouth-parts of larvae, 78; what they feed on, 78; breathing apparatus,
79; growth of the larvae, 80; _Pupae_, 80; active but takes no food, 80;
breathing tubes, 80; how the adult issues, 81; _The Adult_, 81; male and
female, 81; how mosquitoes "sing" and how the song is heard, 82; the
palpi, 82; _The Mouth-parts_, 83; needles for piercing, 83; _How the
mosquito 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; mosquitoes in Hawaii, 98; _Enemies of the adults_, 99; _Enemies of
the larvae and pupae_, 100; _Fighting mosquitoes_, 101; fighting the
adult, 102; _Fighting the larvae_, 103; domestic or local species, 104;
draining and treating with oil, 104; combatting salt-marsh species by
draining, 105; by minnows or oil, 105.

CHAPTER VII

MOSQUITOES AND MALARIA