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 62
... iron , tin , of tinned iron , tinned copper , tinned lead , glass , and gutta percha , are of comparative- ly recent introduction . They are believed , so far as experience has shown , to impart few or no deleterious properties to water ...
... iron , tin , of tinned iron , tinned copper , tinned lead , glass , and gutta percha , are of comparative- ly recent introduction . They are believed , so far as experience has shown , to impart few or no deleterious properties to water ...
Página 65
... iron mains and leaden service - pipes to the citizens of New York , a city of 400,000 inhabitants . Schuylkill River water , since the year 1815 , has been supplied through iron mains and leaden distribution - pipes to the inhabitants ...
... iron mains and leaden service - pipes to the citizens of New York , a city of 400,000 inhabitants . Schuylkill River water , since the year 1815 , has been supplied through iron mains and leaden distribution - pipes to the inhabitants ...
Página 66
... iron mains , be as little liable to lead - disease as are the citizens of Philadelphia and New York who drink Schuylkill and Croton water similarly served , and that portion of the citizens of Boston who have for nearly a quarter of a ...
... iron mains , be as little liable to lead - disease as are the citizens of Philadelphia and New York who drink Schuylkill and Croton water similarly served , and that portion of the citizens of Boston who have for nearly a quarter of a ...
Página 70
... iron , it was desirable to know if the contact of lead with iron could be more injurious to Cochituate than to Croton , Fairmount , or Jamaica water . Experiments were also made with Albany and Troy reservoir waters , and the Cambridge ...
... iron , it was desirable to know if the contact of lead with iron could be more injurious to Cochituate than to Croton , Fairmount , or Jamaica water . Experiments were also made with Albany and Troy reservoir waters , and the Cambridge ...
Página 71
... Iron . Iron upper- Lead solder . Volume of water as in previous experiments . Days . ' Distilled Water . Albany . · Cam- Cochitu- bridge . ate . Croton . Fairmount . Jamaica . Troy . 3 8.000 1.000 2.000 1.000 1.000 10.000 7 10.000 0.010 ...
... Iron . Iron upper- Lead solder . Volume of water as in previous experiments . Days . ' Distilled Water . Albany . · Cam- Cochitu- bridge . ate . Croton . Fairmount . Jamaica . Troy . 3 8.000 1.000 2.000 1.000 1.000 10.000 7 10.000 0.010 ...
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