Report of the ... Meeting of the British Association for the Advancement of Science, Volumes 1-2J. Murray, 1835 |
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Page 60
... crystal- lization now employed by Mohs and other mineralogists ( the Rhomboidal , Pyramidal , Prismatic , and Tessular ... crystals are altered by the combination . These classes were again divided into dif- ferent orders , and the ...
... crystal- lization now employed by Mohs and other mineralogists ( the Rhomboidal , Pyramidal , Prismatic , and Tessular ... crystals are altered by the combination . These classes were again divided into dif- ferent orders , and the ...
Page 72
... crystals , and to gems cut into artificial forms . If a fluid , of a given refractive and dispersive power , is placed on the surface of a mineral of the very same refrac- tive and dispersive power , there will be no light whatever re ...
... crystals , and to gems cut into artificial forms . If a fluid , of a given refractive and dispersive power , is placed on the surface of a mineral of the very same refrac- tive and dispersive power , there will be no light whatever re ...
Page 78
... crystals of Vanadic Acid , which were transparent , of a brown colour by transmitted light , but reflecting a purplish tint . They were in the form of flat prisms of a high degree of lustre , and had been ascertained by Dr. Brewster to ...
... crystals of Vanadic Acid , which were transparent , of a brown colour by transmitted light , but reflecting a purplish tint . They were in the form of flat prisms of a high degree of lustre , and had been ascertained by Dr. Brewster to ...
Page 81
... crystal- line lens in fishes , birds , reptiles , and quadrupeds , was read by the Secretary , and illustrated with drawings and models by the author . After giving an account of the previous observa- tions of Leeuwenhoek and others ...
... crystal- line lens in fishes , birds , reptiles , and quadrupeds , was read by the Secretary , and illustrated with drawings and models by the author . After giving an account of the previous observa- tions of Leeuwenhoek and others ...
Page 86
... crystal ; but it is otherwise entirely water- worn . Its surface is consequently dull ; but beneath it the mass is perfectly clear and transparent , and , large as it is , without a flaw . It is of a beautiful pale bottle - green colour ...
... crystal ; but it is otherwise entirely water- worn . Its surface is consequently dull ; but beneath it the mass is perfectly clear and transparent , and , large as it is , without a flaw . It is of a beautiful pale bottle - green colour ...
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æther ammonia appears Association Astronomical atmosphere atomic weights atoms axis Berzelius bodies Brewster carbonate carbonic acid carboniferous chemical chemistry chemists chloride colour comet Committee compounds connexion considered contain copper crystalline crystals cyanic acid discovery effect elements Ephemeris examination experiments fact formations gases geological give glass heat Herschel hydrogen important inches inquiry instrument investigation iron isomorphous John Herschel labours light lime magnetic mass mean Meeting Memoirs mercury metal method mineral mineralogy nature object observations obtained oolites optical oxide oxygen paper perturbations phænomena Phil Philosophical phosphorus planets potash present principle prism probably produced Professor properties published quantity radiation rays refraction remarkable researches right ascensions rocks salts screen similar Society soda solution species specific gravity stars strata substances sulphate sulphuret sulphuric acid surface tellurium temperature theory thermometer tion Trans vapour views weight Yorkshire Philosophical Society
Popular passages
Page 41 - be to give a stronger impulse and 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, and to obtain a greater degree of national attention to
Page 41 - and to obtain a greater degree of national attention to the objects of science and a removal of any disadvantages of a public nature which impede its progress.
Page 41 - inquiry, to promote the intercourse of those who cultivate science in different parts of the British Empire, with one another, and with foreign philosophers, and to obtain a
Page 414 - well as the external outline of our globe, are elliptical, their centres being coincident, and their axes identical with that of the surface,—a state of things incompatible with a subsequent accommodation of the surface to a new and different state of rotation from that which determined the original distribution of the component matter.
Page 327 - which defy all such methods of examination, and which will yield only to the magical analysis of polarized light. A body which is quite transparent to the eye, and which appears upon examination to be as monotonous in its structure as it is in its aspect, will yet exhibit under polarized light the most exquisite organization,
Page 430 - same number of atoms combined in the same way produces the same crystalline form, and the same crystalline form is independent of the chemical nature of the atoms, and is determined only by their number and relative
Page 127 - Fellow of Trinity College, Cambridge ; and Plumian Professor of Astronomy and Experimental Philosophy in the University of Cambridge. THE
Page 274 - are extremely important. Supposing they all acquired the same degree of solar heat which was thus converted into heat of temperature, and then radiated from the surfaces as simple heat, the real conclusion established is, that the RADIATING powers of surfaces for simple heat are in the inverse order of their conducting powers.
Page 158 - for 1816, Burckhardt gave the results of a comparison of Delambre's Tables with a great number of Maskelyne's observations (far greater than the number on which they were founded). It appeared that the epoch, the perigee, and the eccentricity, required sensible alterations, and that the mass of Venus ought to be reduced about
Page v - Fellow of Trinity College, Cambridge ; and Plumian Professor of Astronomy and Experimental Philosophy in the University of Cambridge