—— Same. No. 76. Washington, 1891. 393pp..25
CONTENTS.
A dictionary of altitudes in the United States (Second edition), by Henry Gannett.
—— Same. No. 77. Washington, 1891. 51pp., 4pls..10
CONTENTS.
The Texan permean and its mesozoic types of fossils, by Charles A. White.
—— Same. No. 78. Washington, 1891. 131pp. .15
CONTENTS.
Report of work done in the division of chemistry and physics mainly during the fiscal year 1889-'90. Frank Wigglesworth Clarke, chief chemist.
—— Same. No. 79. Washington, 1891. 33pp., 17 pls..10