 But having afterwards procured a lens of twelve inches diameter and twenty inches focal distance, I proceeded with great alacrity to examine by the help of it what kind of air a great variety of substances, natural and factitious, would yield...  Joseph Priestley - Page 194by Thomas Edward Thorpe - 1906 - 228 pagesFull view - About this book
 | Joseph Priestley - 1790 - 494 pages
...extracting air from a great variety of fubftances, as was explained in the introduction to this work.' But having afterwards procured a lens of twelve inches diameter, and twenty inches focal diftance, I proceeded with great alacrity to examine, by the help of it, what kind of air a great variety... | |
 | Henry Minchin Noad - 1841 - 362 pages
...sufficient power to make many of the experiments I had projected, but having afterwards procured one of twelve inches diameter and twenty inches focal...natural and factitious, would yield, putting them into flasks filled with quicksilver, and inverted in vessels of the same. With this apparatus, on the 1st... | |
 | Henry Minchin Noad - 1843 - 524 pages
...sufficient power to make many of the experiments I had projected, but having afterwards procured one of twelve inches diameter and twenty inches focal...natural and factitious, would yield, putting them into flasks filled with quicksilver, and inverted in vessels of the same. With this apparatus, on the 1st... | |
 | Smithsonian Institution. Board of Regents - 1860 - 460 pages
...projected, and which in theory appeared very promising. But having afterwards procured a lens of tnxlve inches diameter and twenty inches focal distance,...natural and factitious, would yield, putting them into glass -wessels, which I filled with quicksilver, and kept them inverted in a basin of the same. With... | |
 | Smithsonian Institution - 1880 - 876 pages
...possibly make many of the experiments which I had projected, and which in theo.ry appeared very promising. But having afterwards procured a lens of twelve inches...natural and factitious, would yield, putting them into glass vessels, which I filled with quicksilver, and kept them inverted in a basin of the same. With... | |
 | 1880 - 874 pages
...possibly make many of the experiments which I had projected, and which in theory appeared very promising. But having afterwards procured a lens of twelve inches...alacrity to examine by the help of it what kind of airagrcat variety of substances, natural and factitious, would yield, putting them into glass vessels,... | |
 | Smithsonian Institution - 1880 - 902 pages
...possibly make many of the experiments which I had projected, and which in theory appeared very promising. But having afterwards procured a lens of twelve inches...distance, I proceeded with great alacrity to examine Ът the help of it what kind of air a great variety of substances, natural and factitious, would yield,... | |
 | Robert Routledge - 1881 - 748 pages
...possible. " Having procured a lens ot 12 inches diameter and 20 inches focal distance, I proceeded witli great alacrity to examine by the help of it what kind...natural and factitious, would yield, putting them into small phials made with round bottoms and very thin, filled with mercury and inverted in a basin of... | |
 | Matthew Moncrieff Pattison Muir - 1902 - 196 pages
...decay, by heating beef, mutton, and other animal substances, and by other methods. He says : " Having procured a lens of twelve inches diameter and twenty...great variety of substances, natural and factitious, p 1: & »_-- s:§: I^W^'-l-ll -|P*M' -- Fig. XVI., which is reduced from an illustration in Priestley's... | |
 | 1917 - 906 pages
...discovery of "dephlogisticated air," as he named the new gas. Let Priestley tell his own story : "Having procured a lens of twelve inches diameter and twenty inches focal distance, I proceeded with the greatest alacrity, by the help of it, to discover what kind of air a great variety of substances... | |
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