Will exchange Hudson, Corniferous and Carboniferous fossils. Address Prof. J. A. BOWNOCKER, Curator, Geological Museum, Ohio State University, Columbus, Ohio. [Sidenote: ZOOLOGICAL MUSEUM.] Birds, Insects, Reptiles, etc. We wish to make our collections representative for the fauna of the state and will greatly appreciate all contributions to that end. Address, Prof. HERBERT OSBORN, Department Zoology and Entomology, Ohio State University, Columbus, Ohio. Ohio State University, Lake Laboratory. Located at Sandusky on Lake Erie. Open to Investigators June 15 to September 15. Laboratory courses of six and eight weeks beginning June 30, 1902. Write for special circular. _Bucher Engraving Co._ Process and Wood Engraving, Electrotypers and Manufacturers of Stereotyping and Engraving Machinery. _80½ North High Street, COLUMBUS, OHIO._ =Lepidoptera Price List No. 3.—Price 5 cents= Refunded to Buyers Issued November 15th, 1901. Dealers in all kinds of ENTOMOLOGICAL SUPPLIES. Manufacturers of the Original and Celebrated SCHMITT INSECT BOXES. _Builders of INSECT CABINETS, Etc._ American Entomological Company 1040 DE KALB AVENUE, BROOKLYN, N. Y. [Illustration: Logo] [Illustration: Logo] NEW EDITION WEBSTER’S INTERNATIONAL DICTIONARY New Plates Throughout. 25,000 ADDITIONAL WORDS Phrases and Definitions Prepared under the direct supervision of W. T. HARRIS, Ph.D., LL.D., United States Commissioner of Education, assisted by a large corps of competent specialists and editors. =Rich Bindings. 2364 Pages. 5000 Illustrations.= ☞ _The International was first issued in 1890, succeeding the “Unabridged.” The New Edition of the International was issued in Oct., 1900. Get latest and best._ [Illustration: Logo] [Illustration: Logo] Also =Webster’s Collegiate Dictionary= with Glossary of Scottish Words and Phrases. “First class in quality, second class in size.” NICHOLAS MURRAY BUTLER. Specimen pages, etc., of both books sent on application. =G. & C. Merriam Co. Springfield, Mass.= SYSTEMATIC COLLECTION OF _Minerals, Rocks, Fossils_ Birds and Mammals, Shells and Echinoderms. Also Human Skeletons, and Anatomical Models.