| | Book | Save | | 1 | Title: | Terrestrial magnetism
| | | | Creator: | Owen, Richard, 1810-1890 | | | | Publication: | Philadelphia?,1872] | | | | Notes: | Caption title. From the Journal of the Franklin Institute. | | | | Call #: | QC816 O97 | | | | Extent: | 6 p. illus. 24 cm. | | | | Subjects: | Geomagnetism
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| Book | Save | | 2 | Title: | Comparison of the mean daily range of the magnetic declination: with the number of auroras observed each year, and the extent of the black spots on the surface of the sun
| | | | Creator: | Loomis, Elias, 1811-1889 | | | | Publication: | Tuttle, Morehouse & Taylor, printers, New Haven,1870. | | | | Notes: | Cover-title. "From the American journal of science and arts, vol. L. Sept., 1870." | | | | Call #: | QC836 L863 | | | | Extent: | 19 p. pl., (map), tables, diagrs. 23 cm. | | | | Subjects: | Geomagnetism | Auroras
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