204 RECENT P UBLICA TIONS 



On the Origin of Phenocrysts, and the Development of the Porphyritic 

 Texture in Igneous Rocks. [From the American Geologist, Vol. 

 XXV, May igoo.] 

 Outline of the Geology of Long Island in its relations to the Public 

 Water Supply. Reprinted from Technology Quarterly, Vol. XIII, No. 

 2, June 1900. 

 Report on Borings for the East Boston Tunnel. 

 — -Gordon, C. H. Geological Report on Sanilac County, Michigan. With 

 5 plates and 2 figures, including one colored map. Geological Survey of 

 Michigan, Vol. VII, Part 3. Lansing, 1900. 

 — Haycock, E. Records of Post-Triassac Changes in Kings County, Nova 

 Scotia. Reprinted from the Transactions of the Nova Scotian Institute 

 of Science, Vol, X, Session 1899-1900. 

 — Heim, Albert. Gneissfaltenung in alpinem Centralmassiv. ein Beitrag 

 zur Kenntnis der Stauungsmetamorphose. Vierteljahrsschrift in Zurich. 

 Druck von Zurcher & Furrer in Zurich. 

 — Hitchcock, C. H. Volcanic Phenomena on Hawaii. Bulletin of the 

 Geological Society of America, Vol. XII, pp. 45-56, Pis. 2-5. Roches- 

 ter, December 1900. 



The Story of Niagara. Reprinted from the American Antiquarian, Janu- 

 ary 1 90 1. 



— Lee, Willis T. Origin of the Debris-Covered Mesas of Boulder, Colo- 

 rado. Reprinted from the Journal of Geology, Vol. VIII, No. 6, 

 September-October 1900. 



— Liebheim, E. Beitrage zur Kenntniss des lothringischen Kohlenge- 

 birges. Abhandlungen zur geologischen Specialkarte von Elsass-Lothrin- 

 gen. Neue Folge, Heft IV. Atlas. Strassburg in Elsass. Strassburger 

 Druckerei und Verlags-Anstalt, vormals R. Schultz & C ie , 1900. 



— Lyman, Benjamin Smith. Importance of Topography in Geological 

 Surveys. A reprint from ' the Mining and Metallurgical Journal of 

 December 1, 1900. Vol. XXIII, No. 5, p. 67. 



Notes on Mine Surveying Instruments, with special reference to Mr. 

 Dunbar D. Scott's paper on their evolution, and its discussion. [Trans- 

 actions of the American Institute of Mining Engineers — -Canadian 

 Meeting, Angust 1900.] 

 Movements of Ground Water. Reprinted from the Journal of the 

 Franklin Institute, October 1900. 



— -Maryland Geological Survey, Alleghany County. Baltimore, the Johns 

 Hopkins Press, 1900. 



— Nordemskjold, Otto. Om Pampasformationen. Meddelanden fran 

 Upsala Universitets Mineralogisk-Geologiska Institution. 25. P.- A. 

 Norstedt & Soner, Stockholm. 



