Water-supply: (Condensed Principally from a Sanitary Standpoint)J. Wiley & sons, 1902 - 448 lappuses |
Citi izdevumi - Skatīt visu
Bieži izmantoti vārdi un frāzes
acid acre action Albany Albuminoid Albuminoid ammonia algæ Altona alum ammonia amount Asso average bacillus bacteria Board of Health bottom calcium Calcium sulphate capita carbonate cause cent Chem chloride cholera cleaning contained cost cubic centimetre death-rate deep deposit depth disease epidemic evaporation feet filter filter-bed filtered water filtration flow Free ammonia furnished germs Gravel ground-water growth Hamburg hard water inches increase instance intake iron Lake Lake Cochituate layer London magnesium chloride Mass material metres miles months nitrates Nitrogen Nitrogen as nitrates observed organic matter oxidation oxygen peaty pipe plant polluted population potable pumping purification quantity rain rainfall removed reservoir River river-water salt sand sandstone sea-water sedimentation sewage sewers snow soil spirilla spirillum spring stream sulphate summer supply surface tanks temperature tion Total town trace turbidity typhoid fever U. S. gallons water-supply Water-works Asso well-water
Populāri fragmenti
420. lappuse - Any liquid which contains, in 100,000 parts by weight, more than one part by weight of sulphur, in the condition either of sulphuretted hydrogen or of a soluble sulphuret. (h) Any liquid possessing an acidity greater than that which is produced by adding two parts by weight of real muriatic acid to 1,000 parts by weight of distilled water...
419. lappuse - Any liquid which, after acidification with sulphuric acid, contains, in 100,000 parts by weight, more than one part by weight of free chlorine.
419. lappuse - Any liquid containing, in solution, more than two parts by weight of organic carbon or -3 part by weight of organic nitrogen in 100,000 parts by weight. (c) " Any liquid which shall exhibit by daylight a distinct colour when a stratum of it one inch deep is placed in a white porcelain or earthenware vessel.
195. lappuse - The purification of sewage by intermittent filtration depends upon oxygen and time ; all other conditions are secondary. Temperature has only a minor influence ; the organisms necessary for purification are sure to establish themselves in a filter before it has been long in use. Imperfect purification for any considerable period can invariably be traced either to a lack of oxygen in the pores of the filter, or to the sewage passing so quickly through that there is not sufficient time for the oxidation...
419. lappuse - ... parts by weight of dry mineral matter, or one part by weight of dry organic matter in 100,000 parts by weight of the liquid.
414. lappuse - Milwaukee, Wis. Minneapolis, Minn. Mobile, Ala. Nashville, Tenn. Newark, NJ New Bedford, Mass. New Haven, Conn. New Orleans, La.
50. lappuse - ... much of it is a loathsome mass, unfit for human food. Yet it forms the chief sustenance of the pilgrims, and is the sole nourishment of thousands of beggars. Some one eats it to the very last grain. Injurious to the robust, it is deadly to the weak and wayworn, at least half of whom reach the place suffering under some form of bowel complaint. Badly as they are fed the poor wretches are worse lodged. Those who have the temporary shelter of four walls are housed in hovels built upon mud platforms...
51. lappuse - At all these points the corpses lie thickly strewn around (an English traveller counted forty close to one ferry), which accounts for the prevalence of cholera on the banks of brooks, streams, and rivers. Some poor creatures drop and die by the way ; others crowd into the villages and...
224. lappuse - ... from any pond or stream in this Commonwealth, alleging that said ice is impure and injurious to health, the state board of health may appoint a time and place for hearing parties to be affected and give due notice thereof to such parties, and after such hearing said board may make such orders concerning the sale of said ice as in its judgment the public health requires.
213. lappuse - Government should be asked to take cognizance of the matter with the view of devising means of prevention and relief; therefore, be it "Resolved, That this association memorialize the congress of the United States, and ask that they shall authorize the appointment...