Philosophical Transactions of the Royal Society of London, Volume 94

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W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1804 - Mathematics
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Contents

I
1
II
17
III
23
IV
30
V
63
VI
70
VII
77
VIII
180
X
219
XI
279
XII
315
XIII
346
XIV
353
XV
386
XVI
411
XVII
419

IX
191

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Page 151 - ... examinations. Some wise man (who probably was not an early riser) has said of early risers in general, that they are conceited all the forenoon and stupid all the afternoon. Now whether this is true of early risers in the common acceptation of the word or not, I will not pretend to say; but it is too often true of the unhappy children who are forced to rise too early in their classes. They are conceited all the forenoon of life, and stupid all its afternoon.
Page 12 - Young startled and amused the scientific world by announcing his belief that this luminiferous ether "pervades the substance of all material bodies with little or no resistance, — as freely perhaps as the wind passes through a grove of trees.
Page vi - Society answerable, for the certainty of the facts, or propriety of the reasonings, contained in the several Papers so published, - which must still rest on the credit or judgment of their respective Authors.
Page 15 - The existence of solar rays accompanying light, more refrangible than the violet rays and cognizable by their chemical effects, was first ascertained by Mr. Ritter; but Dr. Wollaston made the same experiments a very short time afterwards without having been informed of what had been done on the Continent. These rays appear to extend beyond the violet rays of the prismatic spectrum, through a space nearly equal to that which is occupied by the violet.
Page 11 - From the experiments and calculation which have been premised, we may be allowed to infer that homogeneous light at certain equal distances in the direction of its motion is possessed of opposite qualities capable of neutralizing or destroying each other, and of extinguishing the light where they happen to be united; that these qualities succeed each other alternately in successive concentric superficies, at distances which are constant for the same light passing through the same medium. From the...
Page 388 - The strata of bituminous wood (called Bovey Coal) found at Bovey, in Devon ; which exhibits a series of gradations, from the most perfect ligneous texture, to a substance nearly approaching the characters of pit coal, and, on that account, distinguished by the name of Stone Coal.
Page 30 - Antimony, n4to. and Copper, from Cornwall; with some Observations upon the various Modes of Attraction, which influence the formation of Mineral Substances, and upon the different kinds of Sulphuret of Copper.
Page 11 - Newtonian theory of light, or to the hypothesis of modern opticians founded on views still less enlarged, would do well to endeavor to imagine anything like an explanation of these experiments derived from their own doctrines; and if they fail in the attempt, to refrain at least from idle declamation against a system which is founded...
Page 299 - Cheshire, which lies in thick beds, interposed between strata of an argillaceous or marly stone, and is itself mixed with a considerable portion of the same earth, exhibits a very great peculiarity in its structure. Though it forms a mass extremely compact, the salt is found to be arranged in round masses of five or six feet in diameter, not truly spherical, but each compressed by those that surround it, so as to have the shape of an irregular polyhedron. These are formed of concentric coats distinguishable...
Page 16 - ... of the diameters, but not greater. It is the less surprising that the difference should be so small, as the dimensions of the coloured rings do not by any means vary at the violet end of the spectrum so rapidly as at the red end. For performing this experiment with very great accuracy, a...

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