84 tentific Ametican. OBSERVATORY OF VASSAR COLLEGE. Position of Planets for February 1873. Mercury. Venus. Mars. Saturn. 17ranus Neptune. Occultations. Sun Spots Aurora. Meteorological Items. PLUMBAG BLACK LEAD GRAPHITE. comes in its original state as mined but all of it is washed PENCILS. CRUCIBLES OR MELTING POTS RETORTS ETC., scientific american, 1873-02-08
84 tentific Ametican. OBSERVATORY OF VASSAR COLLEGE. Position of Planets for February 1873. Mercury. Venus. Mars. Saturn. 17ranus Neptune. Occultations. Sun Spots Aurora. Meteorological Items. PLUMBAG BLACK LEAD GRAPHITE. comes in its original state as mined but all of it is washed PENCILS. CRUCIBLES OR MELTING POTS RETORTS ETC., scientific american, 1873-02-08
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