At The Post Office.

A tiew stamping machine has just been put into the Ann Arbor postoffice, to take the place of the band stamping of letters which bas hitberto been in vogue bere. The government paya a rental of $175 a year for the machine, whicb is the only machine of the kind in the state of Michigan. It prints the postniark in one straight line instead of a circle as has nitherto been done by hand and secares mnch greater legibility. The motive power of the machine is electrioity, and its speed is about 6,000 letters an bonr. Postmaster Beakes secnred the machine for the office several montbs ago bat began to think that his term would espire bef ore he wonld see it in operaton. Mr. Landfear, of New York, the inventor of the machine, set it up in the office in person.