INDEX. 



645 



Perry, Professor B. S., 609. 

 Professor J. B.,G22. 

 Perspiration, removal of, 471. 

 Perthes, Justus, 212. 

 Petermann, Dr., 144, 145, 14S, 157, 163, 168, 



171, 179, ISO, 196, 212. 

 Peters, Professor, 33, 36. 

 Petroleum for pegged shoes, 507. 

 magnetic action of, 81. 

 Pheuol and stannate of soda, 530. 

 Phenomena of hydrogen flame, 87. 

 Phialopsis rubra, 97. 



Philadelphia Academy of Natural Sci- 

 ences, 603. 

 Philippeaux, Mr., 280. 

 Phipson, Dr., 106, 111, 334. 

 Phonipara zeua, 320. 

 Phormium tenax, 523. 

 Phosphate bed on the Dniester, 121. 

 Phosphates, origin of mineral, 134. 

 Phosphorescence of marine animals, 289. 



of pyrosoma, 290. 

 Photographic prints, mercurial, 524. 



process,new Woodbury, 517. 

 Wiudow's, 515. 

 Photographs, lunar, 24. 

 Photo-lithographic process, new, 51S. 

 Phylloxera, 370, 393. 

 Physical geography of the Red Sea, 64. 

 Physicians, London, against alcohol, 553. 

 Physiological action of coffee, tea, etc., 



2S3. 

 of quinine, 284. 

 Physiology of grafting, 367. 

 of sleep, 595. 

 of virus, 591. 

 Phytolacca decandra, 357. 

 Piazzi, Mr., 25. 

 Pickle for meat, new, 463. 

 Picric acid for preserving jelly-fish, 291. 

 Pictet, Professor J., 621. 

 Pictures, transparent stereoscopic, 503. 

 Pierre, Mr., 1 OS. 

 Piesse, Dr., 461. 



Pigeons, excised brain restored in, 275. 

 Pigments and dyes used by the ancients, 



509. 

 Pike, ffigantic, 301. 



Mr. RobertG., 410. 

 Pills of cod-liver oil, 550. 

 Pinart, Mr., 333. 



Pisciculture and the fisheries, 397. 

 Pitcher, Dr. Zina, 621. 

 Pityophis cotenifer, 255. 

 Planet interior to Mercury, supposed, 3. 

 Planets discovered in 1872, 36. 

 spectra of, 9. 



their influence on sun spots, 9. 

 Plantamour, Professor, 21. 

 Plants and red rays of light, 346. 



increasing the growth of, 35S. 

 influence of heat on, 343. 

 mineral matter in, 351. 

 their source of nitrogen, 345. 

 unhealthy, powdered coal lor, 36S. 

 Platinized glass transparent, 542. 

 Platinum for mirrors, 541. 



solution in aqua regia, 542. 

 Platinum-bronze for cooking vessels, 529. 

 Plato, lunar crater, 33. 

 Piatt, Captain Robert, 44. 

 Platypsylla castoris, 300. 

 Plotus anhinga, 324. 

 Plumb, Mr., 47S. 



Poisonous red and other colors, 581. 



vanilla cream, 465. 

 Polar expedition, German, 1S4. 

 Polaris, news from the, 142. 

 Polarizing action of tartaric acid, 79. 

 Pollard on seasickness, 579. 

 Polli, Professor, 550. 

 Pollution in water, 573. 

 Pond, Mr. Charles, 203. 

 Pope, Lieutenant, 1S7. 

 Population of the globe, present, 329. 

 Pork, its quality influenced by food, 360. 

 Potash, bichromate, as antiseptic, 570. 



chromate, for discharging colors, 



509. 

 from corn-cobs, 99. 

 from wool, 520. 

 on vegetables, 36S. 

 permanganate of, 50S, 509. 

 Potassium in soil, function of, 367. 



metallic, S4. 

 Potato blight and medusse, 303. 

 Potatoes, improvement of, 454. 



preventing germiuation of, 363. 

 specific gravity test of, 362. 

 storing of, 362. 

 wilting of seed of, 363. 

 Potter, Mr. W. W., 126. 

 Pouchet, Dr., 302, 319, 622. 

 Pouillet, Mr.,1. 



Poultry and eggs influenced by food, 359. 

 Pouncey, Mr., 51S. 



Pourtalcs, Count, 204, 205, 206, 210, 610. 

 Powell, Major, 152, 173, 192, 212. 

 Precious stones in Arizona, 132. 

 Prehistoric beads, 221. 



corpse, discovery of a. 220. 

 (?) man in America, 295. 

 remains at Soloutiv, 331. 

 remains in Wyoming, 330. 

 Preparation of fruit juices, 453. 

 Prepared meat-juice, 456. 

 Preservation of jelly-fish, 290. 



of telegraph poles in Nor- 

 way,^. 

 Preserves and ammonia, 454. 

 Preserving fruit in Russia, 453. 



meat, new mode of, 457. 

 Prestwich, Mr.,618. 

 Preventing sows from devouring their 



young, 3S8. 

 Prevost, Mr., 549. 

 Printing goods, new mode of, 535. 



on glass, 601. 

 Prize essay on the reproduction of eels, 



434. 

 Prizes for fish-cult lire, Mass., 406. 

 Proboscidians of the American eocene, 



307. 

 Proctor, Mr. Richard A., 17, 22, 24, 27, 29. 



on physical observatories, 29. 

 Prosper-IIenry at Paris, 36. 

 Prozmowski, Mr., 16. 

 Pruner-Bey, 331. 

 Pterodactyls, Marsh on, 256. 

 Pubetz, Mr.,50S. 

 Pnchot, Mr., 108. 



Puddling apparatus, Dormoy's, 489. 

 Pumpclly, Professor R.,605. 

 ITirification of coal-gas, 4SS. 

 Purpurophyl from chlorophyl, 107. 

 Putnam, Mr. F. W., 607, 609. 

 Pyaemia and bacteria, 578. 

 Pyrometer, electrical, 81. 



