 London water prevents the formation of any vegetable matter ; no vegetation can be detected, even by a microscope, after a long period. The Thames water has been examined from near its source to the metropolis, and an increasing amount of impurity detected....  American Journal of Science and Arts - Page 2781849Full view - About this book
 | 1848 - 548 lehte
...detected, even by a microscope, after a Vyperiod. The Thames water has been examined from near its so^ to to the metropolis, and an increasing amount of impurity...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 lehte
...states that the pollution of air in crowded rooms is really owing to organic matter, and not merely to carbonic acid — that all the water of great towns...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 - 1118 lehte
...surprising quantity and were very nauseous. The examination of various wells in the metropolis showed the constant formation of nitric acid ; and in many...regular supply. The inland portions of the southern and south-western States, do not get the benefit of the ice trade from the north, the natural ice crop... | |
 | 1849 - 1068 lehte
...was discovered that all organic matter, in filtrating through the soil, was very rapidly oxidized. The presence of the nitrates in the London water prevents...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... | |
 | 1849 - 428 lehte
...— that water purifies itself from organic matter in various ways, but particularly by converting into nitrates, — that water can never stand long...should be used when collected or as soon as filtered. 4. On the Dilatation of Ice by Increase of Temperature. — Three observers have undertaken to solve... | |
 | 1849 - 424 lehte
...— that water purifies itself from organic matter in various ways, but particularly by converting into nitrates, — that water can never stand long...should be used when collected or as soon as filtered. 4. On the Dilatation of Ice by Increase of Temperature. — Three observers have undertaken to solve... | |
 | 1850 - 436 lehte
...matter ; that water purifies itself from organic matter in various ways, but principally by converting into nitrates ; that water can never stand long with...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 lehte
...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 lehte
...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 lehte
...contain organic matter ; that water purifies itself from organic matter, in various ways, but principally by converting it into nitrates — that water can...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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