PUBLICATIONS 



XI 



Brochures of Volume 20 

 Brochures. Pages. Plates. Figures. 



Bibliography of the geology, miner- 

 alogy, and paleontology of Brazil. 

 J. C. Branner 1-132 



Present phase of the Pleistocene 

 problem in Iowa. Samuel Cal- 

 vin 133-152 1-5 



First calcareous fossils and the evo- 

 lution of the limestones. K. A. 

 Daly 153-170 



Geometry of faults. H. F. Reld... 171-196 .... 1-12 



Trap sheets of the Lake Nipigon 

 basin. A. W. G. Wilson 197-222 .... 1^ 



Contribution to the geology of the 

 Silver Peak quadrangle, Nevada. 

 H. W. Turner 223-264 6-9 1 



Kinderhook faunal studies : V, The 

 fauna of the Fern Glen formation. 

 S. Weller 265-332 10-15 



Shortage of coal in the northern Ap- 

 palachian coal field. I. C. White . 333-340 



Aftonian mammalian fauna. Sam- 

 uel Calvin 341-356 16-27 



Unconformity in the so-called Lara- 

 mie of the Raton coal field, New 

 Mexico. W.T.Lee 357-368 28-30 1 



Proposed classification of crystals 

 based on the recognition of seven 

 fundamental types of symmetry. 

 C. K. Swartz 369-398 31-32 1-14 



Aftonian sands and gravels in west- 

 ern Iowa. B. Shimek 399-408 33-37 



Striations and U-shaped valleys pro- 

 duced by other than glacial ac- 

 tion. E. O. Hovey 409-416 38-42 



Clearing out of the Wallibu and Ra- 

 baka gorges on Saint Vincent 

 island. E. O. Hovey 417-426 43-45 



Paleogeography of North America. 



C. Schuchert 427-606 46-101 



Proceedings of the Twenty-first An- 

 nual Meeting, held at Baltimore, 

 Maryland, December 29, 30, and 

 31,1908. E. O. Hovey, Secretary . 607-749 102-111 1-3 



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Irregular Publications 



In the interest of exact bibliography, the Society takes cognizance of all publi- 

 cations issued wholly or in part under its auspices. Each author of a memoir 

 receives 30 copies without cost, and is permitted to order any additional number 

 at a slight advance on cost of paper and press work ; and these separate brochures 

 are identical with those of the editions issued and distributed by the Society. 

 Contributors to the proceedings are also authorized to order any number of separate 



