NOTES ON CONSTRUCTION IN MILD STEEL. WATER WORKS MANAGEMENT AND MAIN Engine and Foot Lathes MACHINE SHOP OUTFITS. TOOLS AND SUPPLIES BEST MATERIALS. BEST WORKMANSHIP. CATALOGUE FREE WET PROCESS CONCRETE IS BEST Ournewlnv incible Concrete Block Machine m akesblocks ing System cures and bleaches to perfection. Tandem. Invincible makes two blocks at once. New catalog free. Over 70 sites and styles for drilling either deep or shallow wells in any Etna of soil or rock. Mounted on wheels or on sills. With engines or horse powers. Strong simple and durable. Any mechanic can operate them easily. Send
NOTES ON CONSTRUCTION IN MILD STEEL. WATER WORKS MANAGEMENT AND MAIN Engine and Foot Lathes MACHINE SHOP OUTFITS. TOOLS AND SUPPLIES BEST MATERIALS. BEST WORKMANSHIP. CATALOGUE FREE WET PROCESS CONCRETE IS BEST Ournewlnv incible Concrete Block Machine m akesblocks ing System cures and bleaches to perfection. Tandem. Invincible makes two blocks at once. New catalog free. Over 70 sites and styles for drilling either deep or shallow wells in any Etna of soil or rock. Mounted on wheels or on sills. With engines or horse powers. Strong simple and durable. Any mechanic can operate them easily. Send for catalog. WILLIAMS BROS Ithaca papers giving a historical resume of the rotary pump and engine from 1588 and illustrated with clear draw ings showing the construction of various forms of pumps and engines. 38 illustrations. Contained in house dog kennel pig pen or out house Is . NATIONAL CHEMICAL CO. 328 E. 13th St. Anderson Ind. Collcroto Nitta Blocks SOUTHERN SHIPPER'S GUIDE DIRECTORY. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending September 3 1907. Account or ledger card in bookkeeping H. Bottle washing machine B. E. Linfoot 865192 Bottle washing machine H W. Van Lei r Box W. Straub. 865280 Wood-working Machinery CURRENT WHEN YOU WANT IT GUNSMITHS TOOL MAKERS EXPERI MENTAL & REPAIR WORK ETC. 0. BARNES CO. EL Machines results of elaborate tests. proporition of gravel and sand to be used in concrete. cussion by Lieut. Henry J. Jones of the various systems of reinforcing concrete con crete construction and their applications. These articles constitute a splendid text book on the subject of reinforced concrete. Noth ing better has been published. article by Spencer Newberry in which prac tical notes on the proper preparation of con crete are given. Scientific American Supplements 1568 and 1569 Scientific American Supplement 1534 gives a give a resume in which the various systems Scientific American Supp
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