5f?4. 



INDEX. 



preparatiou of liydrofeiTOcyanic 

 acid, ib. 



Lingulee, on the chemical composition 

 of recent and fossil, 335. 



Liquids, on some acoustic pha?nomeua 

 produced by the motion of, through 

 tubes, 186; on electro-dynamic in- 

 duction in, 265 ; on the magnetism 

 of, 529. 



Logan (W. E.) on the chemical com- 

 position of recent and fossil Iiin- 

 gnlcc, and some other shells, 335. 



Lone (E. J.) on a new method of 

 propagating plants. 145 ; on the 

 growth of land shells, 363. 



Magnetic direction, on the influence 

 of the moon on the, 52. 



Magnetic inclination, on the applica- 

 tion of magnetic induction to the 

 determination of the, 153. 



Magnetical obsen-ations, on a series 

 of, 53, 66. 



jMagnetism, on the mechanical values 

 of distributions of, 192. 



Magnus (Prof.) on an improved con- 

 struction of an apparatus for the 

 illustration of various phcenomeua 

 of rotating bodies, 272. 



Manganese, on some new and simple 

 methods of detecting, in natural 

 and artificial compounds, and of 

 obtaining its combinations for oeco- 

 nomical or other uses, 221. 



Martin (P. J ) on the anticlinal line 

 of the London and Hampshke 

 basins, 166. 



!Mausite, on the colours of, 215 ; com- 

 position of, 216. 



Maxwell (J. C.) on the transforma- 

 tion of sm-faees by bending, 449. 



Metals, on the conductibility of, for 

 heat, 33 ; on some peculiar reduc- 

 tions of, in the humid way, 297. 



Meteorite, on a new, 378. 



Meteorological observations, 66, 71) 

 151, 231, 303, 383, 463. 



Minerals, analyses of two new, 499. 



Moon, on the influence of the, on the 

 magnetic direction, 52 ; on two 

 ne^v theorems relating to the orbit 

 of the, 278, 429. 



Motgan (Prof. De) on some points in 

 the theory of differential equations, 

 450 ; on an error committed by M. 

 Cauchy in a \\'i\ remarkable theo- 

 rem, 458. 



Nickel, on the occm-reuce of, in some 

 mineral springs, 149 j on the sepa- 

 ration of, from cobalt, 461. 



Nitrotoluylic acid, on some of the 

 products of the deeomiiosition of, 

 142. 



Noad (Dr. H. M.) on some of the 

 products of the decomposition of 

 nitrotoluylic acid, 142. 



Normandy (A.) on the spheroidal 

 state of water in steam-boilers, 283. 



Numbers, on a ])roperty of, 521. 



Object-glasses, microscopic, on a me- 

 thod of determining the angle of 

 aperture of, 368. 



Oil of bitter almonds, on a crystalline 

 deposit from, 26. 



Oils, on the adulteration of, 101 ; on 

 the action of thluted sulphuric acid 

 on, 104 ; action of nitric acid of 

 difl'erent strengths on, 105. 



Ovum, on the penetration of the sper- 

 matozoon into the interior of the, 

 346. 



Ozone, on the production of, by the 

 decomposition of water at low tem- 

 peratures, 459. 



Paragviay tea, analysis of, 23. 



Pendulum experiments, observations 

 on M. Foucault's, 379. 



Percy (Dr. J.) on the detection of 

 gold in lead and its compounds, 

 126. 



Phear (J. B.) on some parts of the 

 geology of Suffolk, 447- 



Phenvle, on some new compounds of, 

 376. 



Photography, on some early experi- 

 ments in, 326. 



Plants, on the electricity of, 122; on 

 a new metliod of propagating, 

 145. 



Pollock (Sir F.) on certain properties 

 of square numbers and other qua- 

 dratic forms, 147, 287, 358; on a 

 proof of Fermat's first and second 

 theorems of the polygonal num- 

 bers, 358. 



Polychroism, on the artificial produc- 

 tion of, in crystallized substances, 

 228. 



Polygon, on the porisra of the in-and- 

 cireumscribed, 339. 



Powell (Rev. B.) on certain pheno- 

 mena of rotator)- motion, 291,398. 



Probabilities, on the theorj' of, 29. 



