552 



INDEX. 



370; on a porismatic property of 

 two conies, 438 ; on the rotation of 

 a rigid body about a fixed point, 440. 



Tate (T.) on the Strength of Materials, 

 reviewed, 391. 



Telegraph, on the electric, 470. 



Tessarines, observations on, 281. 



Thermometrical observations made at 

 the apartments of the Royal Society, 

 on the reduction of the, 66. 



Thomson (Prof. W.) on some re- 

 markable effects of lightning, 53 ; 

 on the effect of pressure in lowering 

 the freezing-point of water, 123; 

 on the forces experienced by induc- 

 tively magnetized ferromagnetic or 

 diamagnetic non-crystalline sub- 

 stances, 241 ; on a remarkable pro- 

 perty of steam, 386. 



Thunder-storms, account of some, 

 329; on the theory of, 510. 



Triadic arrangements of seven and 

 fifteen things, on the, 50, 169. 



Tritomite, analysis of, 234. 



Tyndall (J.) on the magneto-optic 

 properties of crystals, and the rela- 

 tion of magnetism and diamagne- 

 tism to molecular arrangement, 1 . 



Urine, on so-called chylous, 302. 



Uterus, on the change which takes 

 place in the structure of the, during 

 utero-gestation, 223. 



Vegetables, on the oils produced by 

 the action of sulphuric acid upon 

 various classes of, 226. 



Violette (M.) on the distillation of 

 mercury by high-pressure steam, 

 472. 



Voelcker (Dr.), analysis of red-coloured 

 Roman glass found at Cirencester, 

 121. 



Walker (G.) on the theory of a new 

 species of locomotive vessel, 447. 



Waller (Dr. A.) on the section of 

 the glossopharyngeal and hypo- 

 glossal nerves of the frog, 65. 



Wart-hogs, on the development and 

 homologies of the molar teeth of 

 the, 57. 



Water, on the effect of pressure in 

 lowering the freezing-point of, 123. 



Waves, on the theory of, 512. 



Weather, remarks on the, 129, 373. 



Wedgwood (H.) on the knowledge of 

 body and space, 230„ 



Weibye (P. H.) on some new minerals 

 from Norway, 234. 



Well-water, on the alteration of, 395. 



Whewell (Rev. W.) on Aristotle's 

 account of induction, 468 ; on some 

 doctrines of political economy, 468; 

 on the intrinsic equation of curves, 

 470. 



Whitney (J. D.) on a mineral con- 

 taining oxide of uranium, 153. 



Wilde (E.) on the untenableness of 

 the received theory of Newton's 

 rings, 451. 



Williamson (Prof. A.) on a theory of 

 aetherification, 350. 



END OF THE THIRTY-SEVENTH VOLUME. 



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