. The human body and health : an elementary text-book of essential anatomy, applied physiology and practical hygiene for schools . y, in orupon which the germs may lodge. Typhoid Fever transmitted by Milk. — Many severe epi-demics of fever have resulted from infected milk. As the cows never sufferfrom this malady, it isevident tliat the germsmust get into the milkfrom an outside source is oftenthe water used from apolluted well or streamto wash the eans. Asingle germ remainingin the water, clingingto the can, is capable ofdeveloping so rapidlyin milk as to give riseto over 1,000,00
. The human body and health : an elementary text-book of essential anatomy, applied physiology and practical hygiene for schools . y, in orupon which the germs may lodge. Typhoid Fever transmitted by Milk. — Many severe epi-demics of fever have resulted from infected milk. As the cows never sufferfrom this malady, it isevident tliat the germsmust get into the milkfrom an outside source is oftenthe water used from apolluted well or streamto wash the eans. Asingle germ remainingin the water, clingingto the can, is capable ofdeveloping so rapidlyin milk as to give riseto over 1,000,000 germs in 12 hours. Frequently germshave been known to get into the milk from the hands orclothes of those who have just recovered from the disease,or from those who have been nursing a typhoid patient. Infectious and Non-contagious Diseases. — The germscausing lockjaw are present in the soil and may reachthe tissues through any kind of a wound, but they growonly when the air is shut off from them. Boils or anyother inflammation are the result of bacteria gaining en-trance and growing beneath the skin. Several diseases,. Fig. 179. — Two malarial germs, each in ablood corpuscle. Magnified. ALCOHOL AND DISEASE 269 including hydrophobia, trichinosis, malaria, yellow fever,and sleeping sickness, are produced by minute animalsfinding their way into the blood. Hydrophobia usuallyresults from the bite of a rabid dog with the germs in hissaliva. Trichinosis comes fromeating pork not well cooked andcontaining little worms. Theparasites causing malaria oryellow fever can reach the bodytissues only by the bite of cer-tain species of mosquitoes. Themalaria mosquito may always berecognized by the fact that ithas spotted Avings and holds itsbody oblique to the surface onwhich it alights, so that itappears to stand on its head. Cholera infantum and otherdiarrheal diseases often resultfrom the use of unclean milkand water or from food vesselsin which certain bacteria havedeveloped. Alco
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