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Excerpt from The American Journal of Science and Arts, Vol. 33 The cause assigned for this direction of comets' trains, by Pingre, namely, the resistance of the

Excerpt from The American Journal of Science and Arts, Vol. 14: July, 1828 VIII. On the Boulders of Primitive Rocks found in Ohio, and' other western states and

Excerpt from The American Journal of Science and Arts, Vol. 33: May 1862 VIII. On the investigation of Microscopic forms by means of the Images which they furni

Excerpt from The American Journal of Science, Vol. 33: January to June, 1887 Botany and Zoology - Bulletin of the Congress of Botany and Horticulture at St. Pet

Excerpt from The American Journal of Science and Arts, Vol. 93: Nos. 127, 128, 129; January, March, May, 1867 XVIII. Remarks on the Cretaceous rocks of the West