. Smithsonian miscellaneous collections. A^ V. T 1 1 r OK THE PbISMATIC SoLAR SptCTRLM. The n region. Wave-lengths 15200 to 18200 Angstroms. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 82. NUMBER 2 THE THORACIC MECHANISM OF A GRASSHOPPER, AND ITS ANTECEDENTS BY R. E. SNODGRASS Bureau of Entomology,U. S. Department of Agriculture

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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience