. Town and city. lodging house once ~] | | | \ \a week. They even went to the M infected House bedrooms, when this seemed to be vaccination is requirednecessary, wakened people, vaccinated them, and gavethem certificates to that effect. These certificates werenecessary just then, for the city had made a rule that noman should be allowed to spend two consecutive nightsin any city lodging house unless he had a certificatestating that he had been vaccinated recently. Thus it was that New York City carried on her small-pox war. Her ofiicers were doctors, inspectors, and vac-cinators, while her pri
. Town and city. lodging house once ~] | | | \ \a week. They even went to the M infected House bedrooms, when this seemed to be vaccination is requirednecessary, wakened people, vaccinated them, and gavethem certificates to that effect. These certificates werenecessary just then, for the city had made a rule that noman should be allowed to spend two consecutive nightsin any city lodging house unless he had a certificatestating that he had been vaccinated recently. Thus it was that New York City carried on her small-pox war. Her ofiicers were doctors, inspectors, and vac-cinators, while her private soldiers were of every ageand size; for each citizen who had been vaccinated wasin the army of defense, and vaccine was the powerfulweapon. I go TOWN AND CITY So much was done that from one hundred andninety cases in January, .1902, the number dwindled tonine in December. It had taken two hundred vaccin-ators six months to do the work, and during that timethey had vaccinated eight hundred thousand They raise Vaccine to save us from Smallpox This is the way cities protect themselves in thesedays. The very first discovery of how to save by vac-cination was made by Dr. Jenner, an Englishman, in1796. He saw that milkmen often had sores on theirhands, which they caught from the cows they milked;he also noticed that such men were as safe from small-pox as if they had been inoculated ; and by putting twoand two together he concluded that if a milkman can be VACCINATION 191 saved by accident through sores on the cow he milks,it ought to be possible to save other men on purposethrough the same sores on the same cow. That was hisgreat discovery. He called the pus vaccine becausevaua is the Latin name for cow. Since that time menhave found that to be perfectly safe from smallpox theyneed to be vaccinated about once in seven years. To make sure that the vaccine they use is as pure aspossible, they raise it on special calves that are kept forthe purpose. The calves shown in
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