79 



[iQOO.] 



PEARCE, F. See Dupaec, L. 



PEARCE, R. The Mode of Occurrence of Gold in the Ores of the Cripple Creek 



District, Proc. Colo. Set. Soc. v, pp. 5-10. 1896. 



2. Further Notes on Cripple Creek Ore. Ibid. pp. 11-16, 1 pi. 1896. 



3. Occurrence of Tellurium in Oxidized Form associated with Gold. Ibid. 



pp. 144-147. 1896. 



4. Some Notes on the Occurrence of Uraninite in Colorado. Ibid. pp. 156- 



158, fig. 1896. 



5. Notes on the Occurrence of a Rich Silver and Gold Mineral containing 



Tellurium, in the Griffith Lode, near Georgetown, Clear Creek County (Colo.). 



Ibid. pp. 242-243. 1896. 

 6. Notes on the Occurrence of Tellurium in an Oxidized Form in Montana. 



Ibid. pp. 244-245. 1896. 

 PEARSON, H. H. W. Plants and their Food. III. Soils and Rocks. Knowledge, 



xxiii. pp. 101-103, fig. 1900. 

 PEIRCE, 13. 0. On the Thermal Diffusivities of different kinds of Marble. Proc. 



Am. Acad. Arts Sc Sci. xxxvi. pp. 11-16. 1900. 

 PELLAT, E. See Baeeois, O, &c; also Gosselet, J., &c. 



PELLOUX, A. Sulla Wulfenite di Gennamari in Sardegna. Atti P. Accad. 



Lincei, ser. 5, Pendic. ix. sem. 2, pp. 13-17, figs. 1900. 

 PENFIELD, S. L. On Pearceite, a Sulpharsenite of Silver, and on the Crystalli- 

 zation of Polybasite. Proc. Colo. Sci. Soc. v. pp. 210-224, figs. 1896. 



2. On Graftonite, a new Mineral from Grafton, New Hampshire, and its 



Intergrowth with Triphylite. Am. Journ. Sci. ser. 4, ix. pp. 20-32, figs. 1900; 

 & Zeitschr. f. Kryst. xxxiii. pp. 433-445. 1900. 



i 3. On the Chemical Composition of Sulphohalite. Am. Journ. Sci. ser. 4, ix. 



pp. 425-428. 1900; & Zeitschr. f. Kryst. xxxiii. pp. 523-526. 1900. 



■ 4. On the Interpretation of Mineral Analyses : a Criticism of recent Articles 



on the Constitution of Tourmaline. Am. Journ. Sci. ser. 4, x. pp. 19-32. 1900 ; 

 & Zeitschr. f. Kryst. xxxiii. pp. 527-547. 1900. 



5. On the Chemical Composition of Turquois. Am. Journ. Sci. ser. 4, x. 



pp. 346-350. 1900 ; & Zeitschr./. Kryst. xxxiii. pp. 542-547. 190o. 



■ 6. Contactgoniometer und Transporteur von einfacher Construction. Ibid. 



pp. 548-554, figs. 1900. 



■ & W. E. Fobd. Siliceous Calcites from the Bad Lands, Washington County, 



South Dakota. Am. Journ. Sci. ser. 4, ix. pp. 352-354, figs., pi. v. 1900. 



, 2. On some Interesting Developments of Calcite-Crystals. Ibid. x. pp. 237- 



244, figs., 1900 ; & Zeitschr. f. Kryst. xxxiii. pp. 513-522, pi. xvi. 1900. 



■ , & C. H. Waeeen. Einige neue Mineralien von den Zinkgruben zu Franklin 



(N. J.). [Hancockite, Glaucochroite, Nasonite, Ganomalite, & Leucophoenicite.] 

 Ibid. pp. 227-242, figs. 1900. 

 PENROSE, R. A. F., Jun. The Ore-Deposits of Cripple Creek. Proc. Colo. Sci. 



Soc. v. pp. 50-53. 1896. 

 PEOLA, P. Flora messiniana di Guarene. Boll. Soc. geol. ital. xviii. pp. 225- 

 255. 1899. 



■ 2. Flora tongriana di Pavone d'Alessandria. Ibid. xix. pp. 36-62, figs. 1900. 



■ 3. Flora del Langhiano torinese. Piv. ital. Paleont. Bologna, v. pp. 95- 



108, figs. 1900. 



■ 4. Flora del tongriano di Bagnasco, Nuceto, &c. Ibid. vi. pp. 79-89, fig. 1900. 



PERKINS, H. I. See Haeeison, J. B. 



PEROCHE, J. Application de l'Astronomie a la Constatation des Mouvements de 



la Croute du Globe. Ann. Soc. geol. Nord, xxix. pp. 107-111. 1900. 

 PERON, A. See Velain, C. 

 PERRAUDIN, J. P. See Foeel, F. A. 



PERRIER, E. {the late). Alphonse Milne-Edwaeds. [Obit.] Ann. Sci. nat. 



(Zool. Sf Paleont.), ser. 8, xi. pp. iv-vii. 1900. 

 PERRINE, C. D. Earthquakes in California in 1896 and 1897. Bull, U.S. Geol. 



Surv. no. 155, pp. 1-45. 1898. 

 — K , 1898. Ibid. no. 161, pp. 1-31, fig., 1 pi. 1899. 



PERVINQUIERE, L. Sur l'Eocene de Tunisie et d'Algerie. C. B. Acad. Sci. 



Paris, exxxi. pp. 563-565. 1900. 

 PESEZ, — , &c. Sondages a Lille. ^4.?*?*. Soc. geol. Nord, xxviii. pp. 271-279. 



1900. 



PETERMANN, — , & E. Van den Beoeck. La Constitution du Limon. Bull. 



Soc. beige Geol, Brux. xiv. Proc.-verb. pp. 262-265. 1900. 

 PETERS, C. Macombe's Country (South of the Zambesi), its Ancient GoldfieMs 



and Industrial Resources. Journ. Soc. Arts, xlviii. pp. 343-349. 1900. 



