Show iron hire H ire you ever noticed eaid a st louisan yesterday those iron now standing erect iu the baso mant of abe naw nsw planters honec well did u ever stop to think of tho immense weight they will bo compelled to support steadily for many many years oh you have bat I 1 suppose you have thought the manufacturer just made choso pillars and sold them knowing anything abent how much weight they would bear or bow ion they would bear it let ino tell you about that those gillara anro cast in alio manner cast iron by running tho liquid metal into iselda but alon sido of each pillar is cast na aroa bar from tho eama metal tho bar is pra ciscely nn inch and bi feet in length when cold it is subjected to very simple test each end of the is placed upon a table and pr suspended from tb center cy 11 oa 01 I 1 must bear a tensile of pounds to the square inch buet t iua begin with lounda l aind le rr H ralli increased until the bar la fi I 1 t bt perfectly supporting Bup porting tho weight if it breaks for or A |