The Naturalists' Universal Directory

Agric Algæ Anat Animal Arch Arthur Assoc Asst Berkeley Biol Birds Bldg Botany Bureau of Ent Butterflies Buy or Sell Calif Charles Chas Chem Chicago Coleopt Coleoptera Coll College Colo Conn Cornell Univ Crustacea Diptera East Ecol Econ Entomologist Expr Ferns Fishes Flowering Plants Flowers Forest Forestry Fossils Fungi Genetics Geog Geol George Hemiptera Hist Histol Indian Relics Insects Inst Iowa Ithaca John Kans Lepid London Mammals Mass Minn Miss Moths Museum Mycol N. Y. Bot Nature Study Nebr Ohio Orthoptera Ottawa P. O. Box Palæo Parasites Park Ph.D Phila Plant Breeding Plant Pathol Plant Physiol Prof Protozoa Reptiles Robert Shells Surv Toronto U. S. Dept U. S. Geol U. S. Nat Urbana Utah Vert Wash Washington West York City Zool