now published. It goes into all the States and Territo- 77 Franklin St., BOSTON, ings. Contained in SCIENTIFIC AMERICAN SUPPLE- by which the copies are made; how to apply the written ries, and is read in al} the principal libraries and reading MENT, No. 632. Price 10 cents. T’'o be had at this… … The Lunkenheimer Brass Mfg. Co, DRY AIR REFRIGERATING MACHINE. TIE 15-17 E. Sth St., Cincinnati, O. RECENTLY PUBLISHED. Description of Hall’s improved horizontal dry air refrig- Our new catalogue containingover 100 pages, includ- erator, designed to deliver about 10.000 cubie feet of Scientific…
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