OCR Text |
Show Only the Dill Bill VIII Grows GrowsCoal GrowsCoal GrowCoal Coal cannot grow because It lepetrified Is le Ispetrified Ispetrified petrified matter It generally Is be believed beueved belleved lieved ueved that coal originated in swamps swampssimilar swampssimilar swampssimilar similar to present day peat bogs bogsnear bogsnear bogsnear near sea leveland level and subject to re- re repeated repeated re repeated - - peated submergence In deco'11VO deco11VO decompea decompeabig deco'nposing deconposing ' ' . ing big the substance became peat oxy oxygen oxygen oxygen gen and hydrogen were eliminated eliminatedto to a greater greBter extent than carbonMetamorphosis carbon carbonMetamorphosis carbonMetamorphosis Metamorphosis or a change of form formdue formdue formdue due in some extent to pressure , . re- re relulted resulted re resulted - - sulted lulted in lignite and coal Althouih Although Althoughcoal Althouihcoal Althoughcoal coal has been formed in other geolo- geolo geologic geologic geolo-gic geolo gic - - - gic periods the formation occurredchiefly occurredchiefly occurred chiefly in the Carboniferous period |