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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