APPENDIX VII. 



Lectures and Meetings of Societies. 



PAPERS READ AT THE XIXTH AKKUAL MEETING OF THE (JEOLOCICAL SOCIETY 



OF A:\rERICA. 



I. The diiferent kinds of oarth-crust movemouts and tlu'ir causes. Josepli 

 Le Conte. 

 II. Crater lake. J. S. Diller. 



III. The Leucite bilks, Wyoming. ,1. F. Kemp. 



IV, rhysiograpliic development of the District of Coliunhia region. X. H. 



Dartou. 

 Y. Dikes in Appalachian Virginia. \. H. Darton. 



VI. On the changes of drainage in the Ohio river basin. Frank Leverett. 

 VII. Thesolntionof quartz under atmospheric conditions. C.Willard Hayes. 

 VIII. Erosion at base-level. Marias R. Campbell. 

 IX. The origin of certain topographic Ibrais. INIarins K. Canipb(>ll. 

 X. Homology of joints and artificial fractures. J. B. Woodworth. 

 XI. Notes on the structure of the Cranberry district in North Carolina. 

 Arthur Keith. 

 XII. Notes on the stratigraphy of certain homogeneous rocks. C. II. Hitchcock. 



XIII. Unconformities in Marthas Vineyard and Block Island. .J. B. Woodworth. 



XIV. Evidences of northeasterly differential rising of the land along Bell ri%'er. 



Robert Bell. 

 XV. Surface tension of wattsr as a cause of geological phenomena. Ceorge E. 



Ladd. 

 XVI. Cementing materials of the Tertiary sands and gravels of western Kan- 

 sas. Erasmus Haworth. 

 XVII. The work of the United States Ceological Survey in the Sierra Nevada. 

 H. W. Turner. 

 XVIII. Geomorphy of .Tamaica as evidence of changes of level. J. W. Spencer. 

 XIX. The Cornell glacier, Greenland. Ralidi S. Tarr. 



XX. Shore lines of Lake Warren and of a lower water level in western cen- 

 tral New York. H. L. Fairchild. 

 XXI. Okl tracks of Erian drainage in western New York. G. K. Gilbert. 

 XXII. The assumed glaciation of the Atlas mountains of Africa. Angelo Heil- 

 prin. 



XXIII. The relation of an abandoned river channel in eastern Iowa to the west- 



ern edge of the Illinois ice-lobe. Frank Leverett. 



XXIV. Glacial observations in the Umanak district, Greenland. George 11. 



Barton. 



XXV. The Nipissing-Matawa river, the outlet of the Nipissing great lakes. F. 



B. Taylor. 



XXVI. Moraines of recession and their significance in glacial theory. F. B. 



Taylor. 



XXVII. Mechanics of glaciers-moraines and stratification. Harry Fielding Iteid. 



XXVIll. Variations of glaciers. Harry Fielding Reid. 



XXIX. Preliminary note on the Pleistocene history of J'uget sound. Bailey 



Willis. 



235 



