INDEX. 



475 



Osborne, Rev. S. G., 239. 

 Oscillograph, the, 57. 

 Osteu-Sacken, Baron Von, 309. 

 Otheoscope a form of radiometer, 110. 

 Oxidation in the soil, 357. 

 Oxygen in the solar atmosphere, 11. 



in the sun, 1, 114. 

 Ozone, action of, on nitrogen, 361. 



on the nitrogen of the 

 air, 134. 

 formation of, 133. 



Pacific coast, 223. 



Ocean, depths in the, 190. 

 Packard, Dr. A. S., Jr., 224, 275, 2S1, 310. 

 Pagel, Dr., 308. 

 Pagenstecher, 275. 

 Paykull, 159. 

 Paiauder, Captain, 190. 

 Palestine, 197. 



explorations, 263. 

 Palmeu, Dr. J. A., 310. 

 Palmer, Dr. E., 233. 

 Palms, classification of, 337. 



from the Amazon, 320. 

 Panceri, Prof., 419. 

 Papadakis, Prof. J., 419. 

 Paradox, hydrostatic, 95. 

 Paris Academy of Science, 243. 



Exposition, awards at, 405. 



Geographical Society, 199. 



Observatory, 62. 

 Parker, Prof. W. K., 253. 

 Parlatore, Prof. Filippo, 325, 419. 

 Parrots of the West Indies, 280. 

 Parry, Dr., 234. 

 Parthenogenesis, 2S3, 32S. 

 Pascal's hydrostatic paradox, 95. 

 Pasteur, 243, 246. 

 Patagonia, 195. 

 Patent Model System, 3S9. 

 Paul, 305. 

 Peabody Museum, 263. 



explorations, 233. 

 Pear, pricklv, 342. 

 Peck, C. H./334. 

 Peking, climate of, 86. 

 Penfield, Samuel L.,156. 

 Pengelly's cave explorations, 259. 

 Pennsylvania College Observatory, Get- 

 tysburg, Pa., 43. 

 gas-wells, 147. 

 geological survey in, 229. 

 Percy, Dr., 404. 

 Perez, Prof., 309. 

 Periodicals, 274. 



new geographical, 191. 

 Perkin, 142. 

 Perkins, Prof., 352. 

 Perrier, Prof., 305. 

 Peru, 194. 



Peruvian guano, 367, 368. 

 Peschel, O., 196. 



Petermann, Dr., 188, 190, 192, 201. 

 Petermanu's Mittheiluugeu, 191, 201. 

 Peter, 15. 

 Peters at Kiel, 3. 



of Clinton, 22. 

 Petersen, Dr., 365. 

 Petroleum, origin of, 147. 

 Pevtsow, 199. 

 Pftiiger, 145. 

 Phsenogains, 325. 



Phalangitis, 317. 

 Phascouon Btrombi, 303. 

 Phenakisticope, 113. 



Philips, :-;;;4. 



Phillips, Prof., 39. 

 Philology, 268. 



general discussions on, 270. 

 Phonograph. 399. 

 Phosphatic fertilizers, 366. 

 Phosphorescence, it. r >. 

 Phosphorescent animals, 278. 

 Phosphoric acid as plant-food, 366 



Photographs of the transit of Venus, 

 Phthalius and Pbthnleins, 143. 

 Phyciodes lharos, 308. 

 Physics, 91. 



of the globe, 63. 

 Physiological botany, 335. 



manual of, 326. 



chemistry, 144. 

 Physiology of language, 270. 

 Pickering, Prof. E. C, 21, 39. 

 Pierre, 141. 

 Pig-iron in 1S7C, 4<i6. 



prod act by states, 408. 

 Pilocarpus pinuatus, 344. 

 Pine for walling wells, 233. 

 Pipe-stone quarry, 232. 

 Pisani, M., 157. 

 Placenta of Prosimians, 298. 

 Planets, asteroids, etc., 17. 

 Plank, 106. 

 Plantamour, S6, 88. 

 Plant-food, 35S, 363, 365. 

 Plants, composition of, 372. 

 Plaster casts, prize for cleaning, 404 

 Plate-glass, manufacture of, 396. 

 Plateau, Prof. Felix, 309, 317. 



J., 322. 

 Platinum in organic analysis, 140. 

 Piatt, Franklin, 230. 



W.G.,230, 

 Plaver, Mr. John, 402. 

 Plowright, 334. 

 Pluminer, 4. 



Poggendorff. Prof. J. 0, 419. 

 Pogson, of Madras, n. 

 Pogsou's Catalogue, <">. 

 Poisonous grasses, :;4::. 

 Poisons of Samoa, vegetable, 346. 

 Poisson's law, 75. 

 Polar stations, 64. 

 Polaris expedition, 65, 195, 340. 

 Polarization of light. 117. 

 Pollen, importance of. 260. 

 Polyergus rafescens, 312. 

 Polypodiacea\ 346. 



Portuguese Geographical Society, 201. 

 Potanin, 199. 



Potash salts. 36$ 70. 



Potassic fertilizers, 369, 368. 

 Potassium chlorate reduced, 139. 



tri-iodide, 136. 

 Potato beetle, 310. 



in Germany, 320. 

 Potsdam Institute, 31. 

 Powalsky, Dr.C.,34 

 Powell, Major J. W.,S 256.26S. 



Rev. Thomas, :;40. 

 Power-. Stephen, 266. 

 Prang, 334 

 Prat,M., L40. 



Precious metals in 1S77, 413. 

 Precipitation, 77. 



10. 



