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NEW YORK: D. APPLETON AND COMPANY, 72 FIFTH AVENUE.
SINGLE NUMBER, 50 CENTS. YEARLY SUBSCRIPTION, .00.
Entered at the Post Office at New York, and admitted for transmission through the mails at second-class rates.
APPLETONS' POPULAR SCIENCE MONTHLY.
FEBRUARY, 1899.
VEGETATION A REMEDY FOR THE SUMMER HEAT OF CITIES.
A PLEA FOR THE CULTIVATION OF TREES, SHRUBS, PLANTS, VINES, AND GRASSES IN THE STREETS OF NEW YORK FOR THE IMPROVEMENT OF THE PUBLIC HEALTH, FOR THE COMFORT OF SUMMER RESIDENTS, AND FOR ORNAMENTATION.
BY STEPHEN SMITH, M.D., LL.D.
One of the most prolific sources of a high sickness and death rate in the city of New York is developed during the summer quarter. It has been estimated that from three to five thousand persons die and sixty to one hundred thousand cases of sickness occur annually in this city, from causes which are engendered during the months of June, July, August, and September. An examination of the records of the Health Department for any year reveals the important fact that certain diseases are not only more frequent during the summer quarter than at any other time, but that they are far more fatal, especially in the months of July and August, than during any other period of the year. These are the "zymotic diseases," or those depending upon some form of germ life. The following table illustrates the course of mortality from those diseases in one year:
Month. Deaths.
January 541 February 475 March 476 April 554 May 584 June 798 July 1,433 August 1,126 September 791 October 522 November 460 December 504
It appears that during eight months of the year, excluding June, July, August, and September, the average monthly mortality from "zymotic diseases" was 452. Had the same average continued during the remaining four months the total mortality from those diseases for that year would have been 4,424; but the actual mortality was 7,764, which proves that 3,340 persons were sacrificed during those four fatal months to conditions which exist in the city only at that period of the year. Still more startling is the estimate of the sickness rate caused by the unhealthful conditions created in the summer months in New York city. If we estimate that there are twenty cases of sickness for every death by a zymotic disease there were 66,800 more cases of sickness in the year above referred to than there would have been had the sickness rate been the same in the summer as in the other months of that year.
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