﻿— 535 - 



Tschudi V. y. y. 



Die geographischen Ñamen in Perú. — L. 363. 



u 



Ungcr, F. 



Genera et species plantarum fossilium. — Vindobonae, 1850. — T. 

 219. 



U. S. Geological Survey. 



Adephagons and clavicorn coleóptera from the Tertiary deposits al 

 Florissant, Colorado, by Samuel Hubbard. Scudder — Washington, 

 1900. — S. 2. 



U. S. geological survey. 



A. gazetteer of Cuba, by Henry Gannett. — Washington, 1902. — 

 S. 158. 



U. S. geological survey. 



A. gazetteer of Porto Rico, by Henry Gannett. — Washington, 1901. 

 — S. 298. 



U. S. geological survey. 



A gazetteer of Texas, by Henry Gannett. — Washington, 1902. — 

 S. 157. 



U. S. geological survey. 



A gazetteer of Utah, by Henry Gannett. — Washington, 1900. — 

 S. 281. 



U. S. geological survey . 



Altitudes in Alaska, comp'led by Henry ÍTannett. — Washington, 

 1900. — S. 284. 



U. S. geological survey. 



Analyses of rocks from the laboratory ofthe U. S. geological sur- 

 vey, 1880-1899, tabulated by T. W. Clarke Chief chemist. — Washing 

 ton, 1900. — S. 283. 



