PROCEEDINGS OF THE TEXAS ACADEMY OF SCIENCE, 
107 
TITLES OF PAPERS READ BEFORE THE ACADEMY. 
(Papers indicated with a star (*) are published in full in the Trans¬ 
actions.) 
Austin, February 6, 1892. 
* Introductory Address by the President, Dr. Edgar Everhart. 
* On the Precious and Other Valuable Metals of Texas; W. H. von 
Streeruwitz. 
* On Scientific Analysis as the Basis of Language; Alexander Mac- 
farlane. 
* On Spherics; M. B. Porter. 
Austin, March 5, 1892. 
Linkage, a New Development in Kinematics; Dr. George Bruce Hal- 
sted. 
* The Sources of the Texas Drift; E. T. Dumble, State Geologist. 
Extension of the Method of Topographic Surveying with Transit and 
Stadia; James C. Nagle. 
Analysis of a Hydrocarbon from Mexico; James R. Bailey. 
Austin, April 2, 1892. 
On the Discovery and Occurrence of Mica in North Carolina; Dr. 
Frederic W. Simonds. (For Abstract, see page 114.) 
* The Texas Meteorites; W. F. Cummins, member of Texas Geo¬ 
logical Survey. 
The Fundamental Theorem in Trigonometry; Dr. A. Macfarlane. 
Austin, May 7, 1892. 
The Present Idea of the Molecule; Dr. Edgar Everhart. 
An Account of the Potable Waters in Austin; Dr. Joe S. Wooten. 
The Square Root of Minus One; Dr. A. Macfarlane. 
The Lower Carboniferous Rocks of Arkansas; Dr. Frederic W. Sim¬ 
onds. (For-Abstract, see page 114.) 
