﻿— 541 - 



U. S. geological survcv. 



Mineral resources of the U. S. Calendar year 1900. — David T. Day 

 — Washington, 19CI. — S. 277. 



U. S. geological survey. 



Monographs of the U. S. — Volume XL. — Adephagous and clavi- 

 corn coleóptera from the Tertiary deposits at Florissant, Colorado. — 

 Washington, 1900. — S. 2. 



U. S. geological survey. 



Oil and gas fields of the western Interior and northern Texas coal 

 Measures and of the Upper Cretaceous and Tertiary of the western 

 Gulf coast by Genze I. Adams. — Washington, 1901. — S. 151. 



U. S. geological survey. 



On pyrite and marcasite by H. N. Stockes. — Wasliington, 1901. — 

 S. 153- 



U. S. geological survey. 



Reconaissance in tlie Rio Grande coal fields of Texas b\' Thomas 

 Wayland Vanghan includung a report an igneous rocks from tlie San 

 Carlos coal field by E. C. E. Lord. — Washington, 1900. — S. 279. 



U. S. geological siírvey. 



Results of primary triangulation and priniary tra\"erse fiscal }'ear 

 1900-1901 by H. M. Wilson; J. H. Renshare, E. M. 13ouglas and R. 

 U. Goode. — Washington, 1901. — S. 296. 



U. S. geological survey. 



Results ofspirit leveling fiscal year 1900-1901 by H. M. Wilson; 



J. H. Renshare, E. M. Douglas and R. M. Goodre. — Washington, 

 1901. — S. 152. 



U. S. geological survey. 



Some principies and methods of rock analisys by Willianí Erancis 

 Hillebrand. — Washington, 1900. — S. 291. 



U. S. geological survey. 



Survey of the boundary line betweenn Idaho and .Montana from the 



