14 SCIENTIFIC BOOKS PTJBLISHED BY
Williamson on the Barometer.
4to. Cloth. $15.00.
ON THE USE OF THE BAROMETER ON SUEYEYS AND
RECONNAISSANCES. Part I. Meteorology in its Connec
tion with Hypsometry. Part II.. Barometric Hypsometry. By
E. S. Williamson, Bvt. Lieut.-Col. U. S. A., Major Corps of
Engineers. With Illustrative Tables and Engravings. Paper
No. 15, Professional Papers, Corps of Engineers.
“ San Francisco, Cal., Feb. 27, 1867.
“ G-en. A. A. Humthreys, Chief of Engineers, U. S. Army :
“ General,—I have the honor to submit to you, in the following pages, the
results of my investigations in meteorology and hypsometry, made with the
view of ascertaining how far the barometer can he nsed as a reliable instm-
ment for determining altitudes on extended lines of survey and reconnais-
sances. These investigations have occupied the leisure permitted me from my
Professional duties during the last ten years, and I hope the results will be
deemed of sufficient value to have a place assigned them among the printed
Professional papers of the United States Corps of Engineers.
“ Very respectfully, your obedient servant,
“ R. S. WILLIAMSON,
“Bvt. Lt.-Col. U. S. A., Major Corps of U. S. Engineers.”
Von Cotta’s Ore Deposits.
8vo. Cloth. $4.00.
TREATISE ON OEE DEPOSITS. By Bernhard Von Cotta,
Professor of Geology in the Eoyal School of Mines, Freidberg,
Saxony. Translated from the second German edition, by
Frederick Prime, Jr., Mining Engineer, and revised by the
author, with numerous illustrations.
“ Prof. Yon Cotta of the Freiberg School of Mines, is the author of the
best modern treatise on ore deposits, and we are heartily glad that this ad-
mirable work has been translated and published in this country. The trans-
lator, Mr. Frederick Prime, Jr., a graduate of Freiberg, has had in his work
the great advantage of a revision by the author himself, who declares in a
prefatory note that this may be considered as a new edition (the third) of his
own book.
“ It is a timely and welcome contribution to the literature of mining in
this country, and we are grateful to the translator for his enterprise and good
judgment in undertaking its preparation; while we recognize with equal cor-
diality the liberality of the author in granting both permission and assist-
ance.”—Extraet from Review in Engineering and Mining Journal.
