_Pettengill, A._, on floating islands, xii, 122. ----, stellarota of, xvi, 363. _Pettenkoffer, M._, test for bile, xlix, 206. Peucedanum ternatum, xxviii, 165. _Pfaff_, theory of voltaic electricity, xix, 178. Phacelia, species of, xlv, 171, 172. Phalæna devastator, i, 154. Phalangium esculentum, iv, 60. Pharmaceutical preparations, ii, 373. Phascolatherium, xxxvii, 230. Phenacite, xxx, 177. ----, supposed locality at Goshen, Mass., _C. U. Shepard_, xxxiv, 329. ----, not at Goshen, Mass., xliii, 366. Phi Beta Kappa Society of New York, xxvii, 388. Philadelphia water works, vi, 375; viii, 193. ----, population of, xxi, 194. ---- College of Pharmacy, Journal of, xxi, 173. ---- Academy of Science, see _Academy_. _Phillips, J._, on the principles of geology, from the geology of Yorkshire, xxi, 2. _Phillips, R._, on certain chemical equivalents, xxxvii, 368. ----, on the state of iron in soils, xlix, 394. _Phillips, W._ and _W. D. Conybeare's_ Outlines of Geology, &c., noticed, vii, 203. ---- ---- Geological arrangement, viii, 261. ----, mineralogical collection of, xvi, 379; xlviii, 219. ----, mineralogy of, _F. Alger's_ edition, noticed, xlvi, 203; xlvii, 333 (reviewed). ----, obituary of, xv, 160. _Phillips, W._, essay on the Georgia gold mines, xxiv, 1.^f Philology, origin of the languages of Europe, iv, 379. ----, _F. Adelung's_ conclusion as to the number of languages on the earth, iii, 376; x, 383. Philosophers, morality of the Greek and Roman, ix, 365. Philosophical instruments, _Gambey's_, vii, 374. ---- apparatus, xxiv, 175. ---- ----, American, xxvii, 292. Philosophy of the human voice, _J. Rush_ on, xxv, 425. Phloridzin, discovery of, announced, xxviii, 383. ----, notice of, xxx, 377. Phlox, species of, xi, 169, 170; xlv, 177. Phormium tenax, used for cordage, xxi, 37. Phosphates of alkalies, action of, on carbonate of lime, &c., _J. L. Smith_, xlviii, 97. Phosphate of lime in the teeth of infusoria, xxviii, 386. ---- ----, eupyrchroite identical with, xlvi, 32. ---- ----, see _Apatite_. ---- of soda, impurities in, xix, 82. Phosphorescence of the ocean, v, 133; xvii, 209; xviii, 166, 187. ---- ----, observations on, in the Bonite, xxxvi, 208. ---- ----, _Ehrenberg_, xxxv, 372. ---- of the Gulf of St. Lawrence, xviii, 187. ---- of fluor spar, ii, 142. ---- of several sub-resins, x, 189. ---- communicated by means of electricity, xxi, 378. Phosphorescent plants, xv, 170. Phosphori, solar, xvii, 170. Phosphoric acid in plants, and all vegetable extracts, ii, 358. ---- ----, use of, in jaundice, iv, 162. ---- ----, precipitation of albumen by, xvi, 396. ---- ----, _J. Pelouze_, xxviii, 129.