A manual of hygiene : public and private, and compendium of sanitary laws ; for the information and guidance of public health authorities, officers of health, and sanitarians generally / by Charles A. Cameron.
- Charles Alexander Cameron
- Date:
- 1874
Licence: Public Domain Mark
Credit: A manual of hygiene : public and private, and compendium of sanitary laws ; for the information and guidance of public health authorities, officers of health, and sanitarians generally / by Charles A. Cameron. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![5Q Chlorine and Sulphur in Water. CHAPTER VI. COMPOSITION AND EXAMINATION OF WATERS. Water in a state of absolute purity is never found naturally, and is only prepared with some difficulty. Rain-water collected in such a way as to obtain it as free as possible from impurities has always been found to be contaminated with foreign gaseous and solid matters, ^ohierre (Comptes JRendus, 18Q4, ip 755) found in a cubic metre from '272 to 15-666 grammes of ammonia, from 1813 to 15*52 grammes of nitric acid, and from 5 to 19'3 grammes of common salt. The following tables from Dr. Angus Smith's work on air and rain show the amount of impurities in rain waters. They give the summaries of a large number of experimental results:— AVERAGES. TOTAL ACIDS OF CHLORINE AND SULPHUR. Eain obtained from Total Acids of Chlorides and Sulphates. Grains per Gallon. Parts per Million. Scotland—Inland country places ... England ,, ,, Scotland—Sea-coast country places, west German specimens, a few .. Scotland--Sea-coastcountry places, average „ „ „ east ... London, 1869 Scotland—Towns (Glasgow not included) Birkenhead, near Liverpool Darmstadt—Germany St. Helen's England—Towns Manchester, 1869 Waterloo, near Liverpool Runcorn Liverpool Manchester, average of 1869 and 1870 ... Ireland—Valentia iNCWcastle-on-Tyne Manchester, 1870 ... England—Sea-coast, west, one specimen Near an Alkali Works Glasgow •3801 •6661 1-1129 ] -2400 1 -2760 1-4392 1-5217 1-5653 1-8427 2-1098 2-9902 3-0081 3-3281 3-8554 3-4559 3-4824 3-5464 3-5978 3-6789 3-7648 4-3424 5-3690 5-5421 5-43 9-51 15-89 17-71 18-23 20-57 21-74 22-36 26-32 30-14 42-72 42-97 47-54 47-93 49-37 49-75 50-66 51-40 52-55 53-78 62-03 76-70 79-17 AVERAGES. AMMONIA. Valentia—Ireland Scotland—Sea-coast country places, west Inland Ammonia. Parts per Milliou. •180 •484 •532](https://iiif.wellcomecollection.org/image/b21045045_0068.jp2/full/800%2C/0/default.jpg)
