402 



INDEX 



PAGE 



CLARKE, Mr. ALT AN, 201 



Clay, burnt, as a manure, 293 



Cloth and paper, improvements in 



bleaching, 241 



" napping, 95 



" reworking waste fibre of, 93 



Coal and petroleum, oil from, 286 



" cannel, formation of, 329 



" curious fact in relation to, 323 



" measures, proto-carbouate of iron in, 314 

 " oils, manufacture of, 321 



Coast survey, expenses of, 

 Color, effects of, ou health. 

 Colors, perception of, in pictures, 213 



Compass, Burt's solar, 125 



" Dr. Scoresby's observations 



on the variation of the 147 



" mariner's time, 117 



Compasses, correction of, 149 



Cooking without fire, 111 



" by gas and atmospheric air, 111 

 COOPER'S improved blast pipe, 69 



Copper, on the quality of, for the sheath- 

 ing of ships, 247 

 " sheathing, 252 

 Corn, Indian, machines for husking, 130 

 " planter, Thompson's, 129 

 Cotton and hemp, Japanese, 355 

 " culture, limitation of the area 



adapted to, 849 



" seed, purifying for manufacturing 



oil and oil cake, 118 



" seeds, oil from, 118 



Counterfeiting, Seropyan's protective 



process against, 109 



CRAMPTON'S improved furnace, 67 



Crennille carpets, 91 



Crimea, antiquities in, 383 



Current, great ocean, of the Pacific, 217 

 Currents, electric, intermittent or alter- 

 nating, instrument for determining 

 the value of, for telegraphic purposes, 143 

 Cigars, tobacco pulp, 123 



Cylinders, steam, heating the exterior 

 of, 48 



Deafness, observations on, 

 DEMPSTEK'S triangular yacht, 

 Dinornis, new species of, 

 Dividers, proportional, 

 Dressings, glycerine, 

 DUPPA'S furnace, 



368 



41 



841 



119 



282 

 50 



Earth, new mode of determining the 



density of the, 215 



" physical structure of, 297 

 Electricity and galvanism, use of, for 



producing explosions, 139 

 atmospheric, some of the 



principal causes of, 135 

 on the apparent conversion 



of, into mechanical force, 137 

 organic, present state of, 139 

 engraving by light, &c. 211 

 Electro-physiology, Matteucci's expe- 

 riments on, 356 

 ELLITHOKP'S iron pavement, 82 

 EMMONS, Dr. E., on the Permian and 



Triassic systems of, 312 



Engine, hydro-steam, 126 



" " Siemen's regenerative, 46 



" thermogenic, 45 



Engines, horizontal cylinder, 48 



PAGE 

 Engines, steam, improved construction 



of the governors of, 49 



" steam, improved slide valve 



for, 50 



marine, improved packing for 



the slide valves of, 48 



steam, packing pistons for, 49 



steam, new way of stopping, 47 



Engraving, improved method of, 209 



Envelopes, Knight's safety, 113 



Ether, electrical, existence of, through 



space, 140 



Evacuations, intestinal, influence of bran 



on, 364 



Eye, on the transmission of the active 

 rays of light through the, and their 

 relation to the yellow spot of the 

 retina, 200 



Excavator, "Willey's improved, 129 



Explosions, use of electricity and gal- 

 vanism for producing, 139 



Fabrics, composition for rendering wa- 

 terproof, 124 

 FARADAY, Prof., 272 

 Fastening, dress, patent, 115 

 Fastener, self-acting barn door, 130 

 Fatty bodies, assimilative power of, 357 

 Fibres of plants, Blanc's process for ex- 

 tracting, 116 

 Firearms, improved primer for, 86 

 volcanic repeating, 85 

 Fire engine, steam, Lee & Larned's, 59 

 Fires, means of arresting, 105 

 Fish, artificial production of, 366 

 Fishes, fossil, new American, 336 

 " fossil of the Conn. Eiver sand- 

 stones, 338 

 " viviparous, 366 

 Flax scutching machine, M'Bride's, 90 

 Flock renovator, 95 

 Florida, agency of the Gulf Stream on, 309 

 FOERING'S fire grate, 67 

 Food, sea-weed for, 354 

 " use of brine in, 281 

 Force, mechanical, on the apparent con- 

 version of electricity into, 137 

 Fossils, from the altered rocks of East- 

 ern Massachusetts, 333 

 FOUCAULT, M., 149 

 Fungi, on the study of, 352 

 Furnace, Crampton's improved, 67 

 Duppa's, 50 

 " Spence's smoke-consuming, 68 

 Furnaces, smelting, improved, 67 



Galvanism and electricity, use of, for 



producing explosions, 139 

 Garments, seamless, 92 

 Gas apparatus, improved, 112 

 " currents in the saliferous deposits, 324 

 " in dwelling houses, its uses, con- 

 veniences, and economy, 226 

 " retorts, improvement iu, 113 

 Gearing, new frictional, 69 

 Geological progress, 32 

 Gilding, improvements in, 270 

 Girder rail, new, 57 

 Girders, axles, and shafts, improved, 72 

 Glacier, great, of Greenland, 

 Glass, Petitjean's process for silvering, 271 

 " toilet, improved, 114 

 Glasses, for hotbeds, improvement in, 121 



