 | 1849 - 488 페이지
...matter; that water purifies itself from organic matter in various ways, but particularly by converting it into nitrates, — that water can never stand long...should be used when collected or as soon as filtered. 11. On the Manufacture of Ice. — Ice at the present day is considered one of the necessaries rather... | |
 | 1848 - 548 페이지
...; that water purifies itself from organic matter in various ways, but particularly by converting it into nitrates ; that water can never stand long with...should be used when collected or as soon as filtered. On a new Process for analysing Graphite, natural and artificial. By Prof. RE ROGERS and Prof. WB ROGERS.... | |
 | 1848 - 1138 페이지
...— that water purifies itself from organic matter in various ways, but particularly by converting it into nitrates — that water can never stand long...large scale, and should be used when collected, or as «oon as filtered. — British Association, Athenœum report. ON OPEN FORAMEN ÓTALE. BV DB. MAYNK.... | |
 | 1849 - 428 페이지
...crowded rooms is really owing to organic matter, and not merely carbonic acid, — that all the water of great towns contains organic matter, — that water...found that the linear dilatation of the ice for 80° R. is 0'0052356 (M. Schumacher sen.). 0.0051270 (M. Pohrt). 0.0051813 (M. Moritz). The probable error... | |
 | 1849 - 1118 페이지
...matter; that water purifies itself from organic matter in various ways, but particularly by converting it into nitrates, — that water can never stand long...should be used when collected or as soon as filtered. 11. On the Manufacture of Ice. — Ice at the present day is considered one of the necessaries rather... | |
 | 1849 - 1068 페이지
...— that water purifies itself from organic matter in various ways, but particularly by converting it into nitrates, — that water can never stand long...should be used when collected or as soon as filtered. Ibid., Aug. 1848. FOR THS JOURNAL OP THE PEASEU.V INSTIU1TE. Contrihutions towards a History of the... | |
 | 1850 - 436 페이지
...contains organic matter ; that water purifies itself from organic matter in various ways, but principally by converting into nitrates ; that water can never...should be used when collected, or as soon as filtered. DURABILITY OF ICE. * " SIR FRANCIS HEAD, in his ' Emigrant,' has attributed the durability of the Wenham... | |
 | Great Britain. Parliament. House of Commons - 1850 - 638 페이지
...perception of coolness in the mouth. 16. Water can never stand long with advantage, unless on a very large scale, and should be used when collected, or as soon as filtered. On the SURREY WATER DISTRICT. 'By Dr. ROBERT ANGUS SMITH. In compliance wilh directions from the Board... | |
 | 1850 - 270 페이지
...chemistry of filtration, and alleges that ' water can never stand long with advantage, unless on a very large scale, and should be used when collected, or as soon as filtered.' Small filters do their work imperfectly ; the larger they are the better. The vapid, spiritless taste... | |
 | New Orleans (La.). Sanitary Commission - 1854 - 646 페이지
...; that water purifies itself from organic matter, in various ways, but principally by converting it into nitrates — that water can never stand long...should be used when collected, or as soon as filtered. Water rapidly absorbs noxious gases, and is always injured when exposed to their influence. In this... | |
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... this Report, Dr. Smith states that the pollution of air in crowded rooms is really owing to organic matter and not merely carbonic acid ; that all the water of great towns contains organic matter; that water purifies itself from organic matter in... 
