NOVELTY WORKS, ICH-HOUSE AND COLD ROOM.—BY R. 443 North Street, Baltimore, Md. G. Hatfield. With directions for construction. Four Cash buys State Right on best ‘* Device for S150 engravings, Contained in SCIENTIFIC AMERICAN Sup- Grooming Animals’? ever invented. It PLEMENT, 89. Price 10 cents. T’o… … postage prepaid, to any subscriber in the United States PATENT RIGHTS FOR SALE, PHOTO-ENGRAVING PROCESSES.— HOW TO MAKE AN INCUBATOR.— or Canada, on receipt of three dollars by the pub. The“ Washout” process. The swelled gelatine process Full directions, illustrated with % figures. Also direc-…
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