Philosophical Transactions of the Royal Society of London

W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1815

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Sivu 201 - When heated strongly, it der composes, undergoing fusion at the moment, and is entirely converted into gaseous matter and iodine, leaving no residuum whatever. It requires for its entire decomposition a heat which is rather below the boiling point of olive oil, and there seems to be little or no increase of temperature in the process.
Sivu 444 - A Geological Essay on the imperfect evidence in support of a theory of the Earth deducible either from its general structure, or from the changes produced on its surface by the operation of existing causes.
Sivu 119 - John and the Venus, in the tribune of the gallery at Florence, offer striking examples of pictures, in which all the deeper tints are evidently produced by red and yellow ochres, and carbonaceous substances.
Sivu 428 - That the power of die blood-vessels, like that of the heart, may be destroyed through the nervous system. ' 18. That the office of the ganglia is to combine the influence of the various parts of the nervous system, from which they receive nerves, and to send off nerves endowed with the combined influence of those parts.
Sivu 251 - MONRO calculated, myxine, the apodal chondropterygious fishes, and the least perfect in the system. "In the lamprey (he says) the organs of respiration have seven external openings on each side of the animal ; these lead into the same number of separate oval bags, placed horizontally, the inner membrane of which is constructed like that of the gills in fishes. There is an equal number of internal openings leading into a tube, the lower end of which is closed, and the upper terminates by a fringed...
Sivu 96 - Canova, who was charged with the care of the works connected with ancient art in Rome, he was enabled to select, with his own hands, specimens of the different pigments that...
Sivu 92 - ... off: while removing the whole brain produces no sensible effect upon the heart's action, and destroying the spinal marrow after it is separated from the brain renders the action of the heart slower for a few beats.
Sivu 364 - ... as to form an angle in the middle, in which part he divided it longitudinally, by a fine saw. In the opening so formed, he placed diamond powder, securing it in its situation by two finer wires, laid above and below it, and kept from shifting, by another small wire, bound firmly and closely round them.
Sivu 116 - It appears from the facts that have been stated, and the authorities quoted, that the Greek and Roman painters had almost all the same colours as those employed by the great Italian masters at the period of the revival of the arts in Italy. They had indeed the advantage over them in two colours, the Vestorian or Egyptian azure, and the Tyrian or marine purple.
Sivu 103 - VITRUVIUS speaks of it, under the name of caeruleum/f as the colour used commonly in painting chambers, and states, that it was made in his time at Puzzuoli, where the method of fabricating it was brought from Egypt by VESTORIUS ; he gives the method of preparing it by heating strongly together sand, flos nitri,J and filings of copper. PLINY mentions other blues, which he calls species of sand (arenas) from the mines of Egypt, Scythia, and Cyprus.

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