 | 1771 - 432 Seiten
...and that it forms uo part of the present invention, I need not describe it here more particularly, although it takes a much longer time to obtain a copy upon this paper than upon calotype paper, yet the tints of the copy are generally more harmonious and agreeable. On... | |
 | 1842 - 386 Seiten
...dissolved in eight or ten ounces of water. After a minute or two it should be again dipped in water, and finally dried. The picture is in this manner very...pleasing to the eye ; it requires in general from three to thirty minutes of sunshine, according to circumstances, to obtain a good copy on this sort of photographic... | |
 | 1841 - 1316 Seiten
...with a weak solution of common salt, and next with a solution of nitrate of silver. Although it tnkes a much longer time to obtain a copy upon this paper,...tints appear more harmonious and pleasing to the eye j it requires in general from 3 minutes to 30 minutes of sunshine, according to circumstances, to obtain... | |
 | Royal Society (Great Britain) - 1843 - 538 Seiten
...process already related, namely, by washing them with the gallonitrate of silver, and then warming the paper. When the paper is quite blank, as is generally...pleasing to the eye ; it requires in general from 3 minutes to 30 minutes of sunshine, according to circumstances, to obtain a good copy on this sort... | |
 | Royal Society (Great Britain) - 1843 - 552 Seiten
...made by washing the best writing paper, first with a weak solution of common salt, and /•'.(•/ with a solution of nitrate of silver. Although it...pleasing to the eye ; it requires in general from 3 minutes to 30 minutes of sunshine, according to circumstances, to obtain a good copy on this sort... | |
 | 1846 - 636 Seiten
...memoir read to the Royal Society in February, 1839, and which is made by washing the best writing-paper, first, with a weak solution of common salt, and, next,...circumstances to obtain a good copy on this sort of photoirraphic paper. The copy should be washed and dried, and the fixing process (which may be deferred... | |
 | United States. Patent Office - 1848 - 840 Seiten
...and that it forms no •part of the present invention, I need not describe it here more particularly. Although it takes a much longer time to obtain a copy upon this paper, yet the tints of the copy are generally more harmonious and agreeable. In order to fix such positive copies,... | |
 | Samuel Dwight Humphrey - 1849 - 154 Seiten
...and left. The copies may be made upon Calotype paper in a very short time, the invisible impression being brought out in the way already described. But...circumstances, to obtain a good copy on this sort of pho. tographic paper. The copy should be washed and dried, and the fixing process (which may be deferred... | |
 | 1854 - 816 Seiten
...and that it forms no part of the present invention, I need not describe it here more particularly. Although it takes a much longer time to obtain a copy upon this paper than upon calotype paper, yet the tints of the copy are generally more harmonious and agreeable. On... | |
 | Great Britain. Court of Common Pleas - 1855 - 590 Seiten
...and that it forms no part of the present invention, I nced not describe it here more particularly. Although it takes a much longer time to obtain a copy upon this paper, than upon calotype paper, yet the tints of the copy are generally more harmonious and agreeable. On... | |
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But the author prefers to make the copies upon photographic paper prepared in the way which he originally described in a memoir read to the Royal Society in February 1839, and which is made by washing the best writing paper, first with a weak solution... 
