OCR Text |
Show Artificial diamonds were first produced pro-duced without great pressure in 1908 by Guyot do liolsmcnu, French engineer, en-gineer, and ho has slnco found thatho crystals may grow about ono one-hundredth Inch an hour. Specimens an eighth of an inch In dlamcte'r havo formed near tho ncgatlvo electrodo In a calcium carbldo kopt fused in tho electric furnaco 12 hours, then cooled over night. Molssan's diamonds not over ono twenty-fifth of an Inch In diameter di-ameter woro formed from carbon in Iron, and tho enormous Y.ossuro rom tho sudden cooling ct tho tnoltcn mass was supposed to be necessary. |