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 67
... produce known deleterious effects . - 500cc . evaporated to dryness over a water- bath gave , of solid residue , 0.3918gr .; of which 0.0990gr . were ex- pelled by ignition , and of the non - volatile matters 0.0676gr . were in- soluble ...
... produce known deleterious effects . - 500cc . evaporated to dryness over a water- bath gave , of solid residue , 0.3918gr .; of which 0.0990gr . were ex- pelled by ignition , and of the non - volatile matters 0.0676gr . were in- soluble ...
Página 74
... produce con- densation . One hundred and ten cubic centimetres of the condensed water , after acidulation with acetic acid , were treated with a stream of hydrosulphuric acid . The precipitate was collected on a filter , pre- viously ...
... produce con- densation . One hundred and ten cubic centimetres of the condensed water , after acidulation with acetic acid , were treated with a stream of hydrosulphuric acid . The precipitate was collected on a filter , pre- viously ...
Página 83
... produced no action upon the lead , and had conducted to the opinion , that lead was not acted upon by nitrates in natural waters . As the reaction of the Cochituate or Fairmount water was perfectly neutral , the decomposition of the ...
... produced no action upon the lead , and had conducted to the opinion , that lead was not acted upon by nitrates in natural waters . As the reaction of the Cochituate or Fairmount water was perfectly neutral , the decomposition of the ...
Página 85
... in solution , which is probably what Dr. Dana would have understood from the statement that the above decomposition produces free sulphuric acid . - the potash to unite with the oxide of lead OF ARTS AND SCIENCES . 85.
... in solution , which is probably what Dr. Dana would have understood from the statement that the above decomposition produces free sulphuric acid . - the potash to unite with the oxide of lead OF ARTS AND SCIENCES . 85.
Página 94
... produce the maladies attrib- uted to lead ? It may be assumed that water flowing directly through a leaden pipe of an inch bore and not more than thirty feet in length will ordinarily be identical in constitution with that in the source ...
... produce the maladies attrib- uted to lead ? It may be assumed that water flowing directly through a leaden pipe of an inch bore and not more than thirty feet in length will ordinarily be identical in constitution with that in the source ...
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