INDEX 



375 



Mont Cenis railway 38 



" " tunnel 53 



Monuments, Ogham 362 



Moon, Hansen's theory of . . . . 338 

 " influence of on condensation 



of vapor 349 



Moonlight vs. daybreak .... 349 

 Mortars, ancient, hardness of . . 193 



Mosaic gold 107 



Motion, atomic 125 



" differential 106 



" vs. vitality 276 



Muffa, of sulphur springs .... 323 

 Museum of elements of machinery xiv 

 Musical telegraph 180 



Nationality in voices 333 



Natural aniline 331 



" hybrids 319 



Nebraska, coal in 262 



Nebula, spectra of .... 343, 344 



Nervous force vs. caloric .... 280 



" functions, influence of cold 



on . . • 277 



New cements 95 



" metals 226 



" paints 97 



" planets in 1868 346 



" varnishes 97 



" war vessels 107, 108 



New Hampshire, copper in . . . 231 

 Newfoundland, minerals of . . .231 



Niagara Falls 272 



" " new bridge .... 43 



Nitrate of soda process for making 



steel 21 



Nitro-glycerine 117, 121 



Nomad faces of Russia 318 



Norfolk bustard 332 



Obituarv notices 367 



Ocean depths, life in 320 



Ogliam monuments 362 



.Ordnance, American 109 



" English 110 



Organic chemistry .... 186, 187 



" ferments 304 



" progression of animals . 311 

 " substances, artilicial forma- 

 tion of 187 



Origin of prairies 242 



" of solar system . . . . xin 

 Orion, spectrum of nebula in . . 344 

 Oxalic acid, formation of, by car- 

 bonic acid 188, 193 



Oxide of iron, magnetic, artificial . 230 

 Oxygen, absorption of vs. excre- 

 tion of carbonic acid 292 



Oxygen gas-light 210 



'" preparation of 228 



" " " from the air 192 



Oxyhydrogen light 136 



Ozone 194 



Pacific Islands, antiquities of . . 364 



" railroad 38 



Pain, physiology of 325 



Ptiint, removal of 103 



Paints, new 97 



Pancreas, action of 326 



Pangenesis 310 



Paper, sulphurized 95 



Paper, tobacco 102 



" uses of 93, 103 



" water-proof 102 



Paraffine, as.a lubricator .... 68 

 Peabody breech-loading system . .114 



Pebbles, Brazilian 139 



Pedigree of mankind 312 



Penetration of cannon balls . . . 121 

 Permanganate of potash .... 214 

 Permeability of cast-iron to gases 126 

 Petrifaction of the human body . 330 

 Petroleum, expansion of ... . 184 



" fuel 68 



" in the Caucasus . . . 2(>2 

 Pharaoh's serpents, harmless . . 229 



Philology vs. ethnology 361 



Photographic image, nature of . . 141 

 " improvement . . . 146 



" light 152 



Photographs, balloon 152 



" luminous 145 



" preservation of . . 152 



Photography at French exhibition 149 



Phycocyan 193 



Physiological action vs. chemical 

 constitution of medicine . . . 288 



Picric acid 121,329 



Pier, at Southport 43 



Planets, new, in 1868 346 



" water on 345 



Plants, fertilization of 335 



" fossil, old 238 



" tubular vessels of ... . 335 



Platinized mirrors 138 



Platinum, electrical conductivity of 183 



Pliable glass 147 



Poison of putrefaction 307 



" the rattlesnake .... 306 

 Poisoning by cyanide of potash, 



external, antidote to 329 



Poisonous hosiery 219 



Polarizing apparatus, new . . . 134 

 Portrait figures, with natural land- 

 scapes 143 



Potash, cyanide, antidote .... 329 

 " permanganate of ... . 214 



Powder, anthracite 120 



Prague bridge 45 



Prairies, origin of 242 



Prehistoric archaeology .... xiii 



" man .357,361 



" " mammalia associ- 

 ated with 355 



Preservation of anatomical speci- 

 mens 330 



" " meat ... 75, 232 



" " stone 68 



«« " wines . . . • . 78 



«' «' wood SO 



Printer's ink, new 96 



Progress, animal XI 



Progression, organic, of animals . 311 

 Projectiles, form of, for penetrat- 

 ing water 113 



Pterodactyle 334 



Pulmonary consumption .... 293 



Pulverized fuel 66 



Punched holes 105 



Purity of water, method of testing 202 



Putrefaction, poison in 307 



Pyaemia 328 



Pyrometer, new 182 



