National Institutes of Health Bulletin Volume 28-35

National Institutes of Health Bulletin Volume 28-35

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...has long been a matter of concern to the inhabitants of the District of Columbia. The transient visitor to Washington, seeing only the broad boulevards, handsome structures, and the general air of beauty and cleanliness of the city, obtains the impression of a particularly healthful city. It is often a matter of surprise, therefore, to learn that Washington has a comparatively high death rate, especially from typhoid fever, which has generally been considered a "filth disease." Why Washington should pay such a high tax to typhoid fever has been the subject of frequent investigation. All such studies have, as a rule, been focused on the water supply, although such conditions as pollution of the soil, infection through milk, oysters, and other articles of food, the importation of cases, the contamination of shallow wells, and more recently the danger of communicating the disease through direct contact, and indirectly by means of flies and other agencies, have also received attention. ' The Potomac water has long been regarded as polluted, both by the large majority of the medical profession and by the public at large" The muddy character of the water has doubtless exaggerated its unwholesome qualities in the public mind. From time to time, therefore, engineering projects to improve the quality of thewater, such as subsiding basins, have been conceived and carried out. These improvements, however, did not materially afiect either the turbidity of the water or the typhoid-fever situation. Congress, therefore, provided for a further purification of the water supply by means of slow sand filtration, appropriating for this purpose the Sum Of $3,468,405. The filters were constructed under supervision f Offifiers of more

Product details

  • Paperback | 218 pages
  • 189 x 246 x 12mm | 399g
  • United States
  • English
  • black & white illustrations
  • 1236837924
  • 9781236837929