The Photographic News, Volumes 3-4Sir William Crookes, George Wharton Simpson Cassell, Petter, and Galpin., 1860 |
Other editions - View all
Common terms and phrases
acetic acid action albumen alcohol ammonia apparatus appearance artist bath better bottle camera carbon carbonic acid chemical chloride of silver collodion collodion process colour containing correspondent dark developing dissolved distilled water drachms Dsetjuma effect employed ether exhibited experiments exposed exposure film filter fixing gallic acid give glass gold grains gutta percha Hardwich heat hydrochloric acid hydrogen hyposulphite of soda inch iodide iodine iodised iron lens light liquid matter metallic method minutes negative nitrate of silver nitric acid object observed obtained operation ounce oxalic acid oxide oxygen paper Photographic Society picture piece plate portion portraits positive potassium precipitate prepared present produced proof pyrogallic pyrogallic acid pyroxyline quantity rays rendered salt sensitised side solar soluble solution spots stereograms stereoscopic substance sufficient sulphate sulphuric acid surface taken tint tion tone tube varnish vessel washing whilst yellow
Popular passages
Page 135 - IF thou would'st view fair Melrose aright, Go visit it by the pale moon-light; For the gay beams of lightsome day Gild, but to flout, the ruins gray. When the broken arches are black in night, And each shafted oriel glimmers white; When the cold light's uncertain shower Streams on the ruined central tower ; When buttress and buttress, alternately, Seem framed of ebon and ivory; When silver edges the imagery...
Page 25 - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another, and with foreign philosophers, — to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
Page 25 - ... deductions at which he has arrived, to ask for their examination, to maintain in the combat of debate the truth of his positions and the accuracy of his observations. These meetings, unlike those of any other Society, throw open the arena to the cultivators of all sciences, to their mutual advantage: the geologist learns from the chemist that there are problems for which he had no clue, but which that science can solve for him; the geographer receives light from the naturalist, the astronomer...
Page 43 - The colours thus communicated by the different bases to flame afford, in many cases, a ready and neat way of detecting extremely minute quantities of them...
Page 26 - Berzelius, that great master of analysis. The atomic weights found by that chemist did not, for many of the simple bodies, confirm the suggestion of Prout as to the multiple relations of these numbers to the equivalent of hydrogen. At the same time the more recent determinations for the atomic weights of Carbon, Silver, and some other elements, so closely coincided with this view, that it was very desirable to extend new experiments to the bodies which had fractional atomic weights assigned to them....
Page 25 - ... inquirers after truth, proud only of what they may have achieved or won for the general use of man. Neither are they daring and presumptuous unbelievers — a character which ignorance has sometimes affixed to them — who would, like the Titans, storm heaven by placing mountain upon mountain, till hurled down from the height attained by the terrible thunders of outraged Jove ; but rather the pious pilgrims to the Holy Land, who toil on in search of the sacred shrine, in search of truth — God's...
Page 170 - And having now described the nature of the said invention, and in what manner the same is to be performed, I declare, that what I claim is, First, — the...
Page 27 - ... besides being covered by a newer unstratified drift. To explain these changes I should infer considerable oscillations in the level of the land in that part of France, — slow movements of upheaval and subsidence, deranging but not wholly displacing the course of the ancient rivers.
Page 80 - ... remarkable fact which has been established, that the magnetic force is greater in both the northern and southern hemispheres in the months of December, January, and February, when the sun is nearest to the earth, than in those of May, June, and July, when he is most distant from it ; whereas if the effect were due to temperature, the two hemispheres should be oppositely instead of similarly affected in each of the two periods referred to.
Page 95 - These astronomers are of opinion that the fluid ring is not of very recent formation, and that it is not subject to rapid change ; and they have come to the extraordinary conclusion, that the inner border of the ring has, since the time of Huygens, been gradually approaching to the body of Saturn, and that we may expect sooner or later, perhaps in some dozen of years, to see the rings united with the body of the planet.