598 
Magnets, attractive and repulsive forces 
of, 349. 
Manganese, sesquisulphate of, 173. 
Marcet (M.) on the action of mush- 
rooms on atmospheric air, 82. 
Mathematics, 43, 281, 295, 393, 402, 
515, 538, 549. 
Melloni’s (M.) theory of the transmis- 
sion of calorific rays, on, 23, 109, 
186, 190, 246. 
Mercury, action of ammonia on the 
chlorides and oxides of, 495. 
Metals, magnetic relations of the, 
179. 
Meteorology, 67, 78, 187, 256, 263, 
351, 447, 592; table for Nov. 88; for 
Dec. 176; for Jan. 264; for Feb. 352 ; 
for Mar. 448; for Apr. 5938. 
Microscope, achromatic, 70. 
Miller (Prof.) on the measurement of 
the axes of optical elasticity of certain 
crystals, 431. 
Mineral veins, 229. 
Mineralogy, on symbolic notation as 
applied to, 101; Breithaupt’s Mine- 
ralogy, 173; on thulite and stromite, 
169; culebrite, 261; Riolite and Her- 
rerite, 261. 
Mirage, as seen in Cornwall, 169. 
Mitscherlich (E.) on nitro-benzide and 
sulpho-benzide, 257; on the forma- 
tion of zther, 258. 
Mudge (Capt.) on the ossiferous cavern 
of Yealm Bridge, 579. 
Murchison (R. I.) on the discovery of 
fossil fishes in the new red sandstone 
of Tyrone, 72; on the geological 
structure of Pembrokeshire, 561; on 
the gravel and alluvia of South Wales 
and Siluria, 566. 
Murray (Sir J.) on the influence of ar- 
tificial rarefaction in some diseases, 
and the effects of its condensation in 
others, 62. 
Mushrooms, their action on atmospheric 
air, 82. 
Nephrodium rigidum, 255. 
Newton and Flamsteed, 139, 211, 218, 
225. 
Newton’s Principia, inquiry relative to 
Dr. Pemberton’s translation of, 441 ; 
theory of natural colours, on, 468. 
Nickel, separation of zinc from, 80. 
Nitrate of carbohydrogen, 85. 
Nitro-benzide and sulpho-benzide, 257. 
Nitrogen, iodide of, 12, 13. 
Nixon (J.), table of observed terrestrial 
refractions, 479. 
Notation, symbolic, as applied to mine- 
ralogy, 101. 
INDEX. 
Oil, on the phznomena of drops of 
floating on water, 288. 
Ophthalmia, purulent, 65. 
Opium, new alkali in, 444. 
Optical experiment, 168 ; optical struc- 
ture of the crystalline lenses of ani- 
mals, 193. 
Organic remains, 30, 32, 561, 576, 579. 
Osborne (Dr.) on the effects of cold on 
the human body, and on a mode of 
measuring refrigeration, 59. 
Oxacids, action of on pyroxylic spirit, 85. 
Oxide of chromium, crystallized, 175. - 
Parish (W.) on the effects of the earth- 
quake waves on the coasts of the Pa-~ 
cific, 181. 
Pemberton’s (Dr.) translation of New- 
ton’s Principia, inquiry relative to, 
441. 
Pembrokeshire, geology of, 561, 567. 
Persian Gulf, on the, 506. 
Phillips (R.) on the action of oxacids on 
pyroxylic spirit, 85. 
Phloridzine, 444. 
Pingel (Dr.) on the gradual sinking of 
the west coast of Greenland, 73. 
Pinus, descriptions of two species of, 
255. 
Poisson’s (M.) capillary theory, on, 89. 
Polariscope, simple, 70. 
Potatoe starch, 586. 
Powell (Prof.), remarks on M. Melloni’s 
paper on the transmission of calorific 
rays, 23; on M. Cauchy’s theory of 
the dispersion of light, 24, 204, 305 ; 
on the theory of dispersion, 112; 
note on the transmission of radiant 
heat, 186; on the dispersion of light, 
413. 
Pratt (J. H.) on the proposition that a 
function of @ and wz can be developed 
in only one series of Laplace’s coefti- 
cients, 474. 
Prawn, on the growth of the, 421. 
Precipitate, white, 498. 
Pritchard (A.), apparatus for illustrat- 
ing the polarization of light, 70. 
Psychometer, or measurer of refrigera- 
tion, 61. 
Pulse, on the differential, 63. 
Pyroxylic spirit, action of oxacids on, 85. 
Quinine, iodide of, 191. 
Radiant heat, 23, 109, 186,190, 246, 425. 
Railways, theory of gradients in, 51, 
97, 243; on vibration of, 70; re- 
marks on iron rails, 291, 439. 
Rainbow, explanation of, on the doc- 
trine of interference, 78. 
Rain-gauge, self-registering, 69. 
Reflexion, 103, 246. 
