paper is published weekly. Every number contains six- showing what does and what does not spread the dis- 238. CANAL STREET, ease. Contained in SCIENTIFIC AMERICAN SUPPLE- teen pages of useful information and a large number of CHICAGO. earn the Watch Trade MENT, No. 888. Price 10cents. ‘1'0 be had… … ly, and includes a very wide range of contents. It pre- ELECTRO MOTOR, SIMPLE, HOW TO Saves marring, upsetting, or springing sents the most recent papers by eminent writers in al! the arbor. Saves cleaning out the centres make. By G.M.Hopkins.—Description of a small electro and taking off the dogs.…
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