ndi ovders for any of the treet, New York, are ola’s: nts, and they several sizes built by Thornyerott Be ime. Giving dime riormauces of the 0 above Ines. governments, sta inter COMPANY. Harrison’s System of Grinding! i in ScIENTIZIC AMEICAN supreeaes: No. 79. ‘Price 10 cents. o 3, M. ALLEN,… … ‘Co sts, L. SMITH HOBART, President. From 4¢ to 10,000 1bs. weight, true to pattern. An invalu- JOHN C. MOSS, Superintendent. _— au atitate for forgings, or for malleable iron cast- PLATES RELIEF eat stron h. Send for circular ane Beers STREET, PHILADELPHIA; PA.’ 87 Maiden Lane, New York. ASTING…
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