Skip to main content
U.S. flag

An official website of the United States government


Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

Filter Total Items: 165569

Geological Society of Washington

No abstract available.

Die konstitution der zeolithe

No abstract available.

Note on the age of the Earth

No abstract available.

The sediment of the potomac river

No abstract available.

Geology of Tucumcari, New Mexico

No abstract available.

Instructions for observing air temperature, humidity, and direction and force of wind

Description of instruments.-The temperature and humidity of the air are obtained from the simultaneous observation of a pair of mercurial thermometers termed the dry and the wet bulb. The air temperature is given by the dry-bulb thermometer, and the humidity is obtained from the combined readings of both. The wet-bulb thermometer differs from the dry-bulb thermometer only in having its bulb covere

Table of differences of altitude to nearest foot for angles from 1 minute to 2 degrees and for distances under 1 mile

The top line represents differences of altitude in feet. The first column gives vertical angles in degrees and minutes. The body of the table gives distances in miles and hundredths of a mile, corresponding to the number of feet at the top of the column, and the angle at the left of the line.