Show AIR TUBES AS LETTER ER CARRIERS A project is on foot for collecting and goject delivering eli vering mails in ili this city by means of pneumatic n it tubes sonic some such system isi is at t present used in london and lifts been investigated by tho post office officials hero here who look upon it with great fa favor or by this means letters etc are dropped in the boxes placed as at present conveniently throughout the city and connected with tubes which run to the general post office ico tho the postman opens the box places tho the letters in a metallic cylinder and by pulling a a lover lever dispatches the mail to the ma main i in office with lightning rapidity tit the tubes I 1 tire are also so a arranged that letters can call be tent fent from the general office to any I 1 ranch office by means of switches the proposed plan is similar to the system now used by the western union telegraph co all the big dailies are arc connected by tube as aa is also tile alio main kofl office ice in dey st with tile the branch office in b st t a distance two milea and a half |