Scientific American Volume 65 Number 20 (November 1891) . I Dallas, Texafc THEORY AND PRACTICE IN ME- tallurgy. By Prof. W. C. Roberts-Austen, , to the Chemical Section of the British Asso-ciation, upon the relation between theory and practicein metallurgy, with special reference to the indebted-ness of the practical man to the scientific in Scientific American Supplement,Nos. 823 and 824. Price 10 cents each. To be had atthis office and from all PIERCE ARTESIAN ARTESIAN Wells, Oil and Gas Wells, drilledby contract to any depth, from 50to
Scientific American Volume 65 Number 20 (November 1891) . I Dallas, Texafc THEORY AND PRACTICE IN ME- tallurgy. By Prof. W. C. Roberts-Austen, , to the Chemical Section of the British Asso-ciation, upon the relation between theory and practicein metallurgy, with special reference to the indebted-ness of the practical man to the scientific in Scientific American Supplement,Nos. 823 and 824. Price 10 cents each. To be had atthis office and from all PIERCE ARTESIAN ARTESIAN Wells, Oil and Gas Wells, drilledby contract to any depth, from 50to 3000 feet. We also manufac-ture and furnish everything re-quired to drill and completesame. Portable Horse Powerand Mounted Steam DrillingMachines for 100 to 1,000 us stating exactly what isrequiredand send for illustrat-ed catalogue. Address& OIL WELL SUPPLY CO., 80 Beaver Street, New York. MAGIC LANTERNS JtFRFOPTICONS^Schools&PubucLanternSlides Colored &UNC0LokED „S^mU£EN&C0. {ST* llulimlcorlT Induction Coils. Handsomelymounted, %l inch spark, $3. Send stamp for interestingcircular. Blakeney Elec. Co., 433 Bway, Brooklyn,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectel, booksubjectengine
