■c^irQ^I |C^^3^^ HBMIiiliaSi HBBl 7:;r<^?'5^>-=s3- [Eutered at the Post Office of New York. N. Y., as Second Class Matter. Copyrishtod. 1SSS. by Muim & Co.] A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE. MECHANICS, CHEMISTRY, AND MANUFACTURES. NEW YORK, JANUARY 7, 1888. Vol. I.TIII.—No.… … UPPER SHOP. THE has been in constant use for THE PATTERN SHOP. the- intervening years. The engineer has made daily records of its work. From these it appears that this pioneer engine of the Gaskill type has given since its erection an average duty of about 105,000,000 foot pounds per 100 pounds of…
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