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 78
... appearance of leaden pipes taken up after several years ' use , in New York , is what might have been expected . I have exam- ined twelve pieces from as many different localities . Most of the specimens that had been in use for only one ...
... appearance of leaden pipes taken up after several years ' use , in New York , is what might have been expected . I have exam- ined twelve pieces from as many different localities . Most of the specimens that had been in use for only one ...
Página 93
... appearance of Croton pipe five years in use , and already referred to . The white coat , it has been ob- served , consists chiefly of carbonates and sulphates . - " Solubility of Oxide of Lead . I have already noticed the con- trariety ...
... appearance of Croton pipe five years in use , and already referred to . The white coat , it has been ob- served , consists chiefly of carbonates and sulphates . - " Solubility of Oxide of Lead . I have already noticed the con- trariety ...
Página 96
... appearance . 6 " Lehman remarks of the solubility of tin in solutions of sal - ammo- niac , alum , and bisulphate and bitartrate of potassa . * Lindes has ex- amined the solutions which by boiling attack tin vessels . According to his ...
... appearance . 6 " Lehman remarks of the solubility of tin in solutions of sal - ammo- niac , alum , and bisulphate and bitartrate of potassa . * Lindes has ex- amined the solutions which by boiling attack tin vessels . According to his ...
Página 103
... appearance of moving pillars of dust extending from the earth to the skies . Bruce , in his travels , describes them as tall pillars , and says he sometimes saw many of them travelling together . " The materials raised on the land were ...
... appearance of moving pillars of dust extending from the earth to the skies . Bruce , in his travels , describes them as tall pillars , and says he sometimes saw many of them travelling together . " The materials raised on the land were ...
Página 128
... appearance of waste or extrava- gance in any respect ; there are no excessive salaries , no idle attachés , nor any apparent disposition to pay too much for services rendered . There seems , on the contrary , to be an anxious desire to ...
... appearance of waste or extrava- gance in any respect ; there are no excessive salaries , no idle attachés , nor any apparent disposition to pay too much for services rendered . There seems , on the contrary , to be an anxious desire to ...
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