WEEKLY JOURNAL OF PRACTICAL INFORMATION IN ART, SCIENCE, MECHANICS, CHEMISTRY AND MANUFACTURES. VOL. VIII.—NO. 4. (SINGLE COPIES SIX CENTS. NEW YORK, JANUARY 24, 1863. '$3 PEE ANNUM—IN ADVANCE. (NEW SERIES.) milker" illustrated in Fruits of Yankee Energy … with the concave metal pan. This pump is the inven- Attached to this metal pan tion of L. O. Colvin, of THE CELEBRATED PATENT COW-MILKER. there is an india-rubber Philadelphia. Applica- diaphragm or sheet which by operating the levers I tion for a patent is now pending through the Sci- terms of…
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