Show A pneumatic tube to europe col J H picric of on who lus been studying the uso if pneumatic tubes lias reich fd a point at winch lie liopas to show that 1 across the cau b used following it i acs cn of the he conceives it alif tubes will always be in couple with alic currents of air in one tube always moving in opposite dr from tho other the will aena to ill list rt alic tube A cair takes the place of lie charge the tube to be indefinitely of to be by the rapidity ith which hiir cin IL through i lo 10 establish a current of air llou leouing ing with swiftness through n tube of milea in length but i alion once the motion will be nearly uniform the of alie current buny be inace is great is luay bo by alic amplo acil in batt fair naci niagara fall coald blast filin anil tin finlie lie power to keep in motion aliu trains to connect this continent the alie within alif tube liay be regulated by pi bising sing of air alif tube or over ice taic i 1000 miles an hour 1 he tube lining and cir exterior would be of polished steel with corrugated with provided arli friction bearing tic wel owing to alic L of lie s surf ice wil irvid to all weight and aliu pix s siira ivill be upon bic pai of the aubr chis is currly ciny limit ti thu s ali e con ait in aliu of C work conrand Con |