ll lift ten tuns, by simply working a lever as in TO pumping water. The jack here shown is a new candidate for public. INVENTORS, MECHANICS, AGRICULTURALISTS. This hay rack is constructed with a vtew to obtain favor. Itappears to be constructed on essentially THE ANNUAL the least weight consistent… … ive manner The SCIENTIFIC AMERICAN is published once a week, in convenient form for binding, and each number contains sixteen pages ot use{ul can be readily put on or taken off by one man or a plain themselves very clearly as regards the con- reading matter, il ustrated with stout boy. NUMEROUS…
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