Observations at the Magnetic and Meteorological Observatory at the Girard College, Philadelphia, 1840-1845.
Subtitle: Made under the direction of A.D. Bache.  Printed by order of the Senate of the United States, and under the direction of the Topographical Bureau.
Contributors: Bache, Alexander Dallas, 1806-1867
Publisher: Gales and Seaton, printer
Published: 1847
Place of publication: Washington
Language: eng
Subjects: Magnetism, Terrestrial -- Observations; Meteorology -- Pennsylvania -- Philadelphia