154 ADDITIOJfS TO THE LIBRAKY. 



the Processes by which a Plagioclase Felspar is converted into a Scapo- 

 lite, 186. — M. Forster Heddle, On the occurrence of Gj^rolite in India, 

 199. — M. Forster Heddle. On DudgeonitC; Hydroplumbite, Plumbona- 

 crite, and Plattnerite, 200. — H. A. Miers. Mineralogical Notes, 204. — 

 L. Fletcher. On the Meteorites which have been found in the Desert of 

 Atacama and its neighbourhood, 223. — T. McK. Hughes. On the manner 

 of occurrence of Beekite and its bearing upon the origin of Siliceous Beds 

 of Palaeozoic Age, 265. — M. F. Heddle. On the Crystalline Form of 

 Gyrolite, 272.— M. F. Heddle. On the Identity of Bruiachite and Fluor, 

 274. — M. F. Heddle. On New Localities for Linarite, Caledonite, and 

 Epistilbite, 278. 



Mineralogical Society. Mineralogical Magazine and Journal. Vol. 

 ix. No. 41. 1890. 

 H. A. Miers. The Hemimorphism of Stephanite : the crystalline form 

 of Kaolinite, 1. — J. T. Cundall. On Zinc Oxide from a Blast-furnace, 

 5. — G. T. Prior. On Zinc Sulphide replacing Stibnite and Orpiment : 

 Analyses of Stephanite and Polybasite, 9. — L. Fletcher. The ^^Meteoric 

 Iron of Tucson, 16. 



Minneapolis. American Geologist. Vol. iv. Nos. 1-6. 1889. 

 Purchased. 

 F. Leverett. Studies in the Indiana Natural Gas-field, 6. — E. O. 

 Ulrich. On Linqulasma, a new Genus, and eight neAv Species oi Lingula 

 and Trematis, 21.— J. C. White. The Age of the Tipton-Run Coal of 

 Blair County, Pennsylvania, 25. — J. Hensoldt. Meteorites and what 

 they teach us, 28, 73. — J. Le Conte. The general interior condition of 

 the Earth, 38. — P. Frazer. The late Session of the International Congress 

 of Geologists at London, 44. — G. M. Dawson. Notes on the Ore Deposits 

 of the Treadwell Mine, Alaska, 84. — F. D. Adams. On the Microscopic 

 character of the Ore of the Treadwell Mine, Alaska, 88. — W. H. Sherzer. 

 New characters of Diphyphyllum semcoense (Bill.), Pom., 93. — S. Calvin. 

 Iron Butte, Montana — Some preliminary notes, 95. — J. F. Kemp and 

 V. F. Marsters. On certain Camptonite Dikes near Whitehall, N.Y., 

 97. — C. S. Beachler. Notice of some new and remarkable forms of 

 Crinoidea from the Niagara Limestone at St. Paul, Indiana, 102. — G. F. 

 Matthew. How is the Cambrian divided ? 139. — G. C. Broadhead. The 

 Missouri River, 148. — J. Marcou. The Mesozoic series of New Mexico, 

 155. — W. Upham. Glaciatiou of Mountains in New England and New 

 York, 165. — R. T. Hill. Foraminiferal origin of certain Cretaceous 

 Limestones, and the sequence of Sediments in North American Cretaceous, 

 174. — C. R. Keyes. The subgeneric groups of Naticopsis, 193. — A. 

 Winchell. Views on Prenebular conditions, 196. — W. Upham. Glacia- 

 tiou of Mountains in New England and New York, 205. — .1. Marcou. 

 The Mesozoic series in New Mexico, 216. — A. F. Foerste. Note-taking 

 and the use of Maps in Geological Field-work, 229. — C. H, Gordon. 

 Notes on the Geology of South-eastern Iowa, 237. — R. S. Woodward. 

 Mathematical theories of the Earth, 268. — V. C. Alderson. Geology in 

 High Schools, 2^4. — M. Fischer. The photographic survey of a State, 

 289. — N. H. Winchell and H. V. Winchell. On a possible chemical 

 origin of the Iron Ores of the Keewatin in Minnesota, 291. — N. W. Perry. 

 The Cincinnati rocks : What has been their Physical History ?, 326.— T. 

 Rupert .loues. On some Palseozoic Ostracoda from Pennsylvania, U.S., 

 337. — N. H. Winchell. Methods of Stratioraphy in studying the Huro- 

 nian, 342. — Jules Man^ou. Jura, Neocomian, and Chalk of Arkansas, 

 357. — A. F. Foerste. Fence-wall Geology, 367. — Some recent specula- 

 tions on the Origin of Petroleum, 371. 



