Relative humidities and vapor pressures over the United States, including a discussion of data from recording hair hygrometers / by Preston C. Day.
Contributors: Day, Preston Clairsville, 1859-1931.
Series: Monthly weather review. Supplement / U.S. Department of Agriculture, Weather Bureau -- no. 6; Monthly weather review (United States. Weather Bureau) -- no. 6.
Publisher: Govt. Print. Off.
Published: 1917
Place of publication: Washington
Language: eng
Number of pages: 61
Subjects: Humidity -- United States.; Vapor pressure -- United States.; Meteorology -- United States -- Periodicals.
Genres: Periodicals.
Notes: "W.B. no. 609."

"Received January 22, 1917. Issued May 7, 1917."

3 folded charts inserted.