| Show IRON CRYSTALS bood stcl the Appear ono 4 group of an exchange sa that alic microscopy mic ic determination of alio din crant qualities of iron and steel is now regarded ai ono of alio most valuable aids in metal surgical lurg ical industries tims alic crystals iron ro double pyramid in alic proportion of alio naci to alic bases sva bics with alio llio the iron the 9 of alio crys tails and the height of alic pyramids composting com posting each clement arc in proportion to alie quality and density of the metal which arc aeck in alio of tho suil and as tha proportion of the carbon dimini Alica in alic alic pyramids have so much alic lesa height in pig iron and the lower qui lilies of hard steel alic crystals alio more closely alio cubic form forged iron ha has s its pyramids and reduced to superposed parallel leaves telca what is called alio narvo of alio and the best lyof giai all its crystals disposed in lines each crystal filling in alio between the angles of those adjoining alic so crystals having luicir axes in the direction of alic they undergo during the working practically good steel hai alic appearance of largo garoupa of beautiful crystal engli |
