Subject Index. 



Nose , Diseases of, 273 , 274 

 Nucleic Acids, 134 

 Nursing, 263, 276, 294 



Obstetrics , 275 et seq . 



Veterinary, 295 

 Occupational Diseases, 259 

 Oceanography, 182 



Oil and Oil Fields, 139, 169 



Engineering, 74 



Motors , 88 



Tank Steamers ,. 71 

 Operative Surgery, 261 

 Ophthalmology, 269 et seq. 

 Ophthalmoscopy, 270 

 Optic Nerve, Diseases of, 270 

 Optics, 100, 101 

 Ordnance Survey Maps , 176 

 Ore Deposits, 169 



Dressing , 174 



Organic Chemistry, 124, 130 

 Organism, The, Science and Philoso- 

 phy of, 9 

 Origin of Life, 193 

 Species, 194 

 Ornamental Stones, 66 

 Orthopaedic Surgery, 267 

 Osmotic Pressure, 127 

 Osteology, 223 

 Otology ,'273, 274 

 Oxy-Acetylene Welding, 77 

 Ozone, 129 



Paint and Painting, 68, 141 

 Palaeobotany , 170 

 Palaeontology, 170 

 Paper and Paper Making, 148, 305 

 Paralysis, Ocular, 271 

 Parasites , Diseases due to , 248 

 Patent Laws ,1,2 

 Pathology, 239 et seq. 



Surgical, 262 

 Pattern Making, 74, 75 

 Pearls, 190, 191 

 Peat, 146 



Pedagogy, History of, 4 

 Per-acids and their Salts, 130 

 Peritoneum, Diseases of the, 257 

 Permanent Way, Railways and Tram- 

 ways, 52 



Petrol Air Gas , 59 

 Petroleum , 143 

 Petrology, 168 

 Pharmacology, 292, 293 

 Pharmacopoeias , 291 , 292 

 Pharmacy, 291 et seq. 

 Philosophy, 6 et seq. 



Photo-Chemistry, 127 



Electricity, 307 



Photographs, Telegraphic Transmis- 

 sion of . 119, 121 



Photography, 307 

 Photomicrography. 196, 308, 309 

 Physical Chemistry, 127 



Geography, 176 

 Physics , 96 et seq . 

 Physiography, 175 

 Physiological Chemistry, 134 



Psychology, 17 

 Physiology , 225 , et seq . 



Dental , 282 



Plant , 201 



- Veterinary , 295 

 Pigments, 141 

 Pistols, Automatic, 158 

 Pitch, Manufacture of, 145 

 Plant Constituents, 135 



Disease and Pests, 212 

 Plants and Plant Life, 198 et seq. 



Poisonous, 212 

 Plague, 231, 246 

 Plating, Electro, 118, 119 

 Platinum Metals, 165 

 Plumbing, 57, 58 



Plywood, Manufacture and use of, 64 



Pneumatics , 39 , 40 , 42 



Poisonous Plants, 212 



Poisons and Poisoning, 238 



Polyphase Currents, 110 



Pond Life, 187 



Poor Relief, Early History of, 5 



Popular Science, 1 



Portable Steam Engines, 82 



Portland Cement , 66 



Post-Mortem Examination, 239 



Pottery, 65, 149 



Poultry Farming, 216, 217 



Power Plant, Electric, 111 



Transmission, 73, 74 

 Precious Metals, The, 155 



Stones, 165 

 Prescribing, 286 



Preserved Foods , Manufacture of, 139 

 Printing, 304, 305, 



Inks , 148 



Telegraph System , The 

 Baudot, 120 



Textile , 299 

 Producer Gas, 143 



Progress, Origin and Growth of, 9 

 Projection, Optical, 102 

 Propellers for Aircraft, 93 



Marine, 70, 85, 86 

 Proteids, Chemistrv of, 227 



372 



