sible service, render the attainment of practical very closely, and reached the following conclusions. The data which he used were the curves furnished by is cushioned and the arm and the bag are brought to success a more difficult matter than it was some years a state ofrest with a minimum of jar… … NS showing both of these operations completed, the car of ordinary earthquake shock is chiefly due to the DIAGRAM SHOWING TRANSFER OF MAIL BAGS. having delivered and received a mail bag. velocity of the wind, and that of the return shocks The standard of the mail crane, at the side of the…
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