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 66
... occur in the same geological associations , are about equally pure , and the latter has been drunk under less favorable circumstances than Cochituate will be , so far as the relations to lead are concerned . On the other hand , should ...
... occur in the same geological associations , are about equally pure , and the latter has been drunk under less favorable circumstances than Cochituate will be , so far as the relations to lead are concerned . On the other hand , should ...
Página 67
... occur . " The experiments were made with bars of lead cast in a common mould , of uniform diameter and length . The quantities of water were constant , or as nearly so as might be , in the same series of experi- ments . The bars were ...
... occur . " The experiments were made with bars of lead cast in a common mould , of uniform diameter and length . The quantities of water were constant , or as nearly so as might be , in the same series of experi- ments . The bars were ...
Página 68
... occurred , it is so stated . The quantities were estimated by a method to be described farther on . " TABLE I. Residue . Loss upon being Ignited . Inorganic Matter . Insoluble after Ignition . gr . gr . gr . gr . Distilled water ...
... occurred , it is so stated . The quantities were estimated by a method to be described farther on . " TABLE I. Residue . Loss upon being Ignited . Inorganic Matter . Insoluble after Ignition . gr . gr . gr . gr . Distilled water ...
Página 73
... occur in lake water as could be readily found ) was to lessen the action on lead . The organic matters of lake and river waters consist of living and deceased organisms , animal and vegetable , and of soluble substan- ces derived from ...
... occur in lake water as could be readily found ) was to lessen the action on lead . The organic matters of lake and river waters consist of living and deceased organisms , animal and vegetable , and of soluble substan- ces derived from ...
Página 77
... occurred from the use of this water . - " TABLE XVII . Determinations of Lead in the Croton Water of New York . - Drawn , after thirty - six hours ' exposure , from leaden pipes , at seven different localities , in the neighbourhood of ...
... occurred from the use of this water . - " TABLE XVII . Determinations of Lead in the Croton Water of New York . - Drawn , after thirty - six hours ' exposure , from leaden pipes , at seven different localities , in the neighbourhood of ...
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Página 135 - August, and from them he infers ' that the changes in the elevation of the waters are entirely too variable to be traced to any regular permanent cause, and that consequently there is no perceptible tide at Green Bay which is the result of observation. And such, it appears to me, is the result of calculation, when the laws that regulate solar and lunar attraction are taken into view.
Página 135 - The phenomena occurred about noon. The day was calm, but cloudy. The water retired suddenly, leaving the bed of the river bare, except for a distance of thirty rods, and remained so for nearly an hour.
Página 137 - Beche, a sudden impulse given to the particles of water, either by suddenly increased or diminished pressure, would cause a perpendicular rise or fall, in the manner of a wave, beyond the height or depth strictly due to the mere weight itself. The difference in the specific gravity of the water of the lakes * American Journal of Science, Vol.