Cancellation Of Postage Stamps

The Postónico Depnrtinent nt Washington has for somo moutba been eonstantly reeeivihg letter from parties claiming to have discovered nu inaèlible iuk for caneeling postage stamps. Impressed with the value of such fin ink, which wonld effeetually prevent the use of wuhImh! stftiups, tlie POdteffloe DepnrtiiK-nt mude ai-rangemeuts for testing all inks preseuted, and ngreed to dopt auy proved satisfactory. A large ïaimber of mks were tested, but the ïesult was bo uusatisfactory tliat iuither twtfl linve ÍM'l-Ji tlH0OUt!UUOll,