 | Friedrich Christian Accum - 1803 - 430 Seiten
...water, or water and soap, and it is in a high degree permanent. The copy of a painting-, or the profile, immediately after being taken, must be kept in an...obscure place. It may indeed be examined in the, shade, bat, in this case, the exposure should be only for a few minutes ; by the light of candles or lamps,... | |
 | Friedrich Christian Accum - 1808 - 428 Seiten
...water, or water and soap, and it is in a high degree permanent. The copy of a painting, or the profile, immediately after being taken, must be kept in an...case, the exposure should be only for a few minutes ; by the light of candles or lamps, as commonly employed, it is not sensibly affected. No attempts... | |
 | Perry Fairfax Nursey - 1839 - 508 Seiten
...170, from which it appears that the idea was originally started by Mr. Wedgwood, and a numerous aeries of experiments made both by him and Sir Humphry Davy,...but in this case the exposure should be only for a ftw minutes. No attempts that have been made to prevent the uncoloured parts from being acted upon... | |
 | William Laxton - 1839 - 522 Seiten
...experiments made both by him and Sir Humphry Davy, which, however, ended in failure. I will take the libcity of quoting a few passages from this memoir. " The...a few minutes. No attempts that have been made to prewnt the uncoloured parts frem being acted upon by light have as yet be^n SBccessful. They have been... | |
 | 1842 - 496 Seiten
...or water and soap, and it is in a high degree permanent. " The copy of a painting, or the profile, immediately after being taken, must be kept in an...case, the exposure should be only for a few minutes ; by the light of candles or lamps, as commonly employed, it is not sensibly affected. " No attempts... | |
 | Robert Kemp Philp - 1864 - 1126 Seiten
...water, or water and soap, and it is in a high degree permanent. The copy of a painting or the profile, immediately after being taken, must be kept in an...case the exposure should be only for a few minutes : by the light of candles or lamps, aa commonly employed, it is not sensibly affected. No attempts... | |
 | Chambers W. and R., ltd - 1850 - 782 Seiten
...dark. The copy of a painting (paintings in glass were employed in these experiments) or the profile, immediately after being taken, must be kept in an...case the exposure should be only for a few minutes. By the light of candles or lamps, as commonly employed, it is not sensibly affected. No attempts that... | |
 | Encyclopaedia - 1851 - 276 Seiten
...permanent. The copy of a painting or the profile, immediately after being taken, must be kept in an obsctire place; it may, indeed, be examined in the shade, but...case the exposure should be only for a few minutes ; by the light of candles or lamps, as commonly employed, it is not sensibly affected. No attempts... | |
 | Robert Hunt - 1852 - 324 Seiten
...water, or water and soap, and it is in a high degree permanent. The copy of a painting or the profile, immediately after being taken, must be kept in an...case the exposure should be only for a few minutes ; by the light of candles or lamps, as commonly employed, it is not sensibly affected. No attempts... | |
 | 1853 - 444 Seiten
...water, or wuter and soap, and it is in л high degree permanent. The copy of a painting or a profile, immediately after being taken, must be kept in an...case the exposure should be only for a few minutes ; by the light of candles or lampa, as commonly employed, it is not sensibly affected. No attempts... | |
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The copy of a painting or the profile, immediately after being taken, must be kept in an obscure place ; it may, indeed, be examined in the shade> but in this case the exposure should be only for a few minutes ; by the Light of candles or lamps, as commonly... 
