Both Prose and Poetical. =Agassiz, Alexander and Elizabeth C.= Seaside Studies in Natural History. Illustrated. 8vo, $3.00. =Agassiz, Prof. Louis.= Methods of Study in Natural History. With Illustrations. Crown 8vo, gilt top, $1.50. Geological Sketches. First Series. With Illustrations. Crown 8vo, gilt top, $1.50. Geological Sketches. Second Series. Crown 8vo, gilt top, $1.50. =Bailey, Prof. L. H., Jr.= Talks Afield, about Plants and the Science of Plants. With 100 Illustrations. 16mo, $1.00. =Bamford, Mary E.= Up and Down the Brooks. In Riverside Library for Young People. Illustrated. 16mo, 75 cents. =Barrows, Samuel J. and Isabel C.= The Shaybacks in Camp. Ten Summers under Canvas. With Map of Lake Memphremagog. 16mo, $1.00. =Burroughs, John.= Works. Each volume, 16mo, gilt top, $1.25. Wake Robin. New Edition, revised. Illustrated. The Same. _Riverside Aldine Edition._ 16mo, $1.00. Winter Sunshine. New Edition, revised. Birds and Poets, with other Papers. Locusts and Wild Honey. Pepacton, and other Sketches. Fresh Fields. Signs and Seasons. Birds and Bees. Essays by JOHN BURROUGHS. With introduction by MARY E. BURT. In Riverside Literature Series. 16mo, paper, 15 cents, _net_. Sharp Eyes, and other Papers. By JOHN BURROUGHS. In Riverside Literature Series. 16mo, paper, 15 cents, _net_. The above two pamphlets, 16mo, boards, 40 cents, _net_. =Cary, Alice.= Pictures of Country Life. Short Stories. 12mo, $1.50. =Cooper, James Fenimore.= Cooper Stories. Narratives of Adventure selected from COOPER'S Works. Stories of the Prairies. Stories of the Woods. Stories of the Sea. Illustrated. 3 vols. 16mo, $1.00 each; the set, $3.00. =Cooper, Susan Fenimore.= Rural Hours. New Revised Edition, abridged. 16mo, $1.25. =Dodge, Col. Theodore A.= Patroclus and Penelope. A Chat in the Saddle. With 14 Phototypes of the Horse in motion. 8vo, half roan, gilt top, $3.00. _Popular Edition._ With Illustrations in outline. Crown 8vo, half roan, $1.25. =Edwards, W. H.= The Butterflies of North America. Containing life-size figures carefully colored by hand from nature, with descriptive letter-press. First Series. Containing fifty colored Plates. 4to, half morocco, full gilt, $35.00, _net_. The Same. With uncolored Plates. 4to, $15.00, _net_; half morocco, full gilt, $20.00, _net_. Second Series. Containing fifty-one colored Plates. 4to, half morocco, full gilt, $40.00, _net_. The Same. With uncolored Plates. 4to, $15.00, _net_; half morocco, full gilt, $20.00, _net_. Third Series. To be issued in from seventeen to twenty 4to Parts. Containing three Plates each. Each part, $2.25, _net_. _Parts 1-10 are now ready, and the remaining Parts will appear at intervals of about three months._ =Emerson, Ralph Waldo.= Nature, Love, Friendship, etc. Modern Classics, No. 2. 32mo, 75 cents; School Edition, 40 cents, _net_.