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Show Iron Germ. In the umo manner that coral Is derived de-rived from cortnlu mlnuto sen-Insects who nourish In tho South Pnclflc, so curtain Iron oros aro obtained from particular microscopic organisms. Tlmf Ih the latest uctcnttflc discovery, which promises Interesting developments. develop-ments. It has beon proved that thoso germs not only aid In tho decomposition of rocks nnd In tho formation of chalk and llmoitono, but play an active part In the forming of Iron-oro deposits. laboratory culturos havo been made of Imeturln which doposlt iron compounds com-pounds both In surfaco wntors and In mine water hundreds of feet undor Biwirid. and tho hard crusts and slimy innMKs that choko up wntor-supply plp have boon found to bo composed f mlllldtiiii of these "Iron bacteria." |