Experiments on Mr. Babbage's method of distinguishing light-houses
Subtitle: reported to a committee of the United States Light-House Board
By: by J.H. Alexander.
Contributors: Morfit, Campbell, 1820-1897.; United States. Light-House Board.
Publisher: Govt. Print. Off.
Published: 1861
Place of publication: Washington
Language: eng
Number of pages: 116
Subjects: Lighthouses -- Lighting.; Oils and fats.; Steam-whistles.
Table of contents: title: Experiments on Mr. Babbage's method of distinguishing light-houses.; title: First [-third] report on oils [signed: J.H. Alexander, Campbell Morfit]; title: Report on fog-signals by steam.