Show Wall Val Street Briefs Martin Margin Marin requirements requirement on trade futures contracts contract on the rubber exchange of or Now New York fork were Increased at the opening of oX today from 2300 to a contract contractor 00 of or 2400 10 pounds tho the unit of oX trade The Is said to bo be In anticipation of or hl higher her prices prIce If 1 the proposed proposed Import tariff tarU of or S 5 cents a 0 pound on crude rubber toes coca Into nto effect Business over O c tho lines Jnes of the Chicago Northwestern railroad In May lay continued to show how about teh ten same amo rate rato of decline from Ironi 1931 as was registered ered in April Apri Fred Pred W. W 8 argent Sargent president ent of or the road rood said today I-fe I ie added that general business In the the roads road's territory as a whole Is I poor but that the tho crop rop outlook Is 1 I 1 Despite a 0 furt further decline lc ii-lc in tn scrap steel prices at some sOle centers centeno the Iron Age Ace composite composite com com- I price for heavy melting scrap re remains re rc- mains unchanged this week at a ton Pig Pie Pis Iron Is unchanged at 1422 a ton and ond he the finished steel Is 2087 cents atee I a pound for Soc tho the seventh consecutive week |