Observations at the Magnetic and Meteorological Observatory, at the Girard College, Philadelphia
By: made under the direction of A.D. Bache, LL. D., and with funds supplied by the members of the American Philosophical Society, and by the Topographical Bureau of the United States, 1840 to 1845. Printed by order of the Senate of the United States and under the direction of the Topographical Bureau.
Contributors: Bache, A. D. 1806-1867.; United States. Army. Corps of Engineers.
Publisher: Gales and Seaton, Printers
Published: 1847
Place of publication: Washington
Subjects: Meteorology -- Pennsylvania -- Philadelphia; Geomagnetism -- Observations
Genres: Observations.