Proceedings of the American Academy of Arts and Sciences, Volumen2Metcalf and Company, 1852 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 64
... cause is asserted by Tanquerel . * This is believed to be true of all the larger European towns whose in- habitants are supplied with water from public reservoirs . On the other hand , the inhabitants of Amsterdam were poisoned by ...
... cause is asserted by Tanquerel . * This is believed to be true of all the larger European towns whose in- habitants are supplied with water from public reservoirs . On the other hand , the inhabitants of Amsterdam were poisoned by ...
Página 66
... causes op- erated upon any one of the waters operated equally upon each of the others . With the exception of Cochituate water , which possessed a yellowish - brown tint , the samples were colorless . A determination of their general ...
... causes op- erated upon any one of the waters operated equally upon each of the others . With the exception of Cochituate water , which possessed a yellowish - brown tint , the samples were colorless . A determination of their general ...
Página 87
... pipe . Where from any cause the pipes have been empty for a length of time and then filled , the first water drawn con- * Appendix to Tanquerel . tains a very considerable quantity of lead . In the OF ARTS AND SCIENCES . 87.
... pipe . Where from any cause the pipes have been empty for a length of time and then filled , the first water drawn con- * Appendix to Tanquerel . tains a very considerable quantity of lead . In the OF ARTS AND SCIENCES . 87.
Página 100
... causes now in operation . Among the present active causes of change , the ocean holds a prominent place . But it has been sup- posed to operate principally by means of the agitations of its surface , or by violent and tumultuous ...
... causes now in operation . Among the present active causes of change , the ocean holds a prominent place . But it has been sup- posed to operate principally by means of the agitations of its surface , or by violent and tumultuous ...
Página 105
... causes of the re- markable differences in the strength of ordinary magnets and electro - magnets of the same shape and size , as follows : - " It is well known that the strength of ordinary magnets does not increase in the same ...
... causes of the re- markable differences in the strength of ordinary magnets and electro - magnets of the same shape and size , as follows : - " It is well known that the strength of ordinary magnets does not increase in the same ...
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Página 136 - Similar phenomena occur on several of the Swiss lakes. Professor Mather, who observed the barometer at Copper Harbour during one of these fluctuations, remarks : — " As a general thing, fluctuations in the barometer accompanied fluctuations in the level of the water ; but sometimes the water-level varied rapidly in the harbour while no such variations occurred in the barometer at the place of observation." As a general rule, these variations in the water-level indicate the approach of a storm,...