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Show Slailents Soriely. The Students' Society or the h D. S. College held another session iu the Social Hall Friday evening October 21th, ISOj. Afttr the usual opening exercises, the chairman in-troduced in-troduced Mr. Wra. J. Silver, member mem-ber of the American Association for the Advancement of Science and or the American Society or Mechanical Mechani-cal Engineers-, who proceeded with his lecture on tho subject of "iron." He spoke or tlio uses and compo-hltlon compo-hltlon of wrought, steel aud cast iron, usibg numerous experiments to illustrate his remark". He stated that iron has been known from earliest times in Asb, being rucn-I rucn-I tioned in tho Illblo as having been ued by Tubal Cain. It was used by the Hebrews, and also by the Egyptians in building thu Pyramids, Pyra-mids, and the tinals cf their kings. Copper and iron mines were found in the Jeserts of Asia, and these mtalj were used by the people or Nineveh for armor, by the Ita'y-lonlans Ita'y-lonlans in their column', and by the Chinese iu many of the arts. Iron was used In the early days or Home, swords indjavelius being formed of it, and ships beiughookej together by links of Iron. Still, through difficulty of smelling smell-ing iron, the autie-nts u-ctl it less iu agricultural implements than they used bras. The first account we had of iron being worked was in Arrica, and the mode ued wa similar to that employed at Hie present pres-ent day. Tne Catalan forge, used Iu early days by all civilized nations, aud In u-o in rematu di-trictsiu America and Europe at the present day, was descri'd and Illustrated by diagrams. The lecturer described the rigidity of cat iron, the malleability of wrought iron, and the temper of Heel; and a small forge having been placed in lositiou, by means of this it was shown that tool steel could be made brittle by balng lieated to a read heat anJ then plai.J in water. Cast iron can be united and run Into niouii?, when it expands and fills all the spice. In this Its chief value consists. Sulphur combined with Iron runs off. Following the lecture was a duet by Misses Maud Jljweriug and Jessie Pugh. |
