INDEX. 



461 



Cayley (A.) on the porism of the in- 

 and-circura scribed polygon, 99, 

 376 ; on the integral fdx -*- 

 V(TO-a?)(a?+a)(a?'+6)(a?+c), 103; 

 on the harmonic relation of two 

 lines or two points, 105 ; on a the- 

 orem for the development of a fac- 

 torial, 182 ; on a generalization of 

 the binomial theorem, 185 ; on a 

 question in the theory of probabili- 

 ties, 259 ; on the nomographic 

 transformation of a surface of the 

 second order into itself, 326 ; on 

 the geometrical representation of 

 an Abelian integral, 414 ; on a pro- 

 perty of the caustic by refraction of 

 the circle, 427- 

 Chalk, on the absorption of water by, 



118. 

 Challis (Prof.) on some theorems in 



hydrodynamics, 338. 

 Chapman (Prof. E. J.), mineralogical 

 notes, 115; on the classification of 

 minerals, 175. 

 Cilia, on the muscularity of, 372. 

 Clairaut's theorem, observations on, 



303. 

 Clark (J. L.) on certain functions of 



the spinal chord, 66. 

 Clouds, on the formation of, 20. 

 Cobalt, on the passive state of, 454. 

 Cockle (J.) on multiplicity of values, 



444. 

 Collins (M.) on Clairaut's theorem, 

 and subjects connected with it, 303. 

 Cordylophora, on the anatomy and 



physiology of, 221. 

 Coulston (Rev. C.) on sun-columns 

 observed at Sandwick Manse, Ork- 

 ney, 78. 

 Crookes (W.) on the application of 

 photography to the study of certain 

 phenomena of polarization, 73. 

 Crystalline structure, on the produc- 

 tion of, in crystallized powders, 

 260. 

 Currents in the arctic seas, remarks 



on the, 141. 

 Cyclones, on the theory of, 438. 

 Davy (E. W.) on some new methods 

 of forming the nitro-prussides, 1 1 . 

 Delesse (A.), researches on granite, 



206. 

 Dick (A.) on the constitution of 



Hayesine, 50. 

 Dobson (T.) on the theory of cyclones, 

 waterspouts, &c, 438. 



Draper (Dr. J. W.) on a new method 

 for the determination of urea, 

 290. 

 Drevermann (M. A.) on the formation 



of crystalline minerals, 453. 

 Earth's rotation, influence of the, on 

 the motion of a conical pendulum, 

 234. 

 Electric currents, observations on the, „ 

 induced in the metallic cross, 46 ; 

 on some effects produced by, 451. 

 Embryology, researches in, 305. 

 Encke (Prof.) on a new solution of 

 the problem of planetary perturba- 

 tion, 378. 

 Eruptive phenomena of Iceland, on 



some of the, 150. 

 Evaporation, researches on, 385. 

 Fibre, animal and vegetable, on the 



spiral structure of, 63. 

 Fluids, elastic, on the thermal effects 



of, 230 ; on the motion of, 449. 

 Forbes (Prof. E.) on some new points 



in British geology, 307. 

 Fractions, continued, on a fundamen- 

 tal rule in the algorithm of, 297. 

 Galvanic coil apparatus, on an im- 

 proved regulator for, 309. 

 Garnet, on the crystals and cavities 



in, 271. 

 Gases, on the condensation of, at the 

 surface of solid bodies, 156, 334 ; 

 on the fourth law of the relations 

 of the elastic force, density and 

 temperature of, 161 ; on the elec- 

 trical conductibility of, at high 

 temperatures, 456. 

 Geology, on some new points in Bri- 

 tish, 307. 

 Geometry, plane, theorems in, 326. 

 Geysers of Iceland, on the, 150. 

 Gore (G.) on an improved regulator 

 for galvanic coil apparatuses and 

 magneto-electric machines, 309; on 

 thermic conduction in metals, 382. 

 Granite, researches on, 206. 

 Haidinger (W.) on the iodo-quinine 



compound, 284. 

 Hargreave (C. J.) on the applications 

 of the calculus of operations to al- 

 gebraical expansions and theorems, 

 351, 457- 

 Harmonic relation of two lines or two 



points, on the, 105. 

 Hassall (Dr. A. H.) on the frequent 

 occurrence of indigo in human 

 urine, 226. 



