Show COLD AND HOT ZONES BELOW Theory That Heat Uniformly Increases Increase With Descent Into Interior of Earth Is Proved The Ibe question Is often otten asked Are Are there cold and hot zones below the s of the earth Just us as there ure are on the surface Z Recent developments would tend to prove that such Is the case and that the long accepted theory that heat uniformly Increases with descent descent descent de de- de- de scent Into the Interior of ot the earth is 13 Incorrect It has been shown that heat generated generated generated gener gener- by oxidization Is often a n deterring deterring deterring deter deter- ring or determining factor in deep mining min ruin ing In sundry localities it has been noted that the Increase In temperature tempera tempera- ture with depth Is not regular being subject to the amount of ot pyrites In Inthe inthe the ground or to the time that the hole In the ground is opened up At Sandhurst Victoria New South Wales Australia a fall of five degrees Fahrenheit Fahren lahren belt heit in temperature was noted after the ground had been opened up torone for tor forone forone one year aue and after four tour years had hud passed there was a further fall and anel then an un unchanged temperature In telling of an instance at nt Comstock Comstock Com Com- stock Nev a government official says At n a depth of 1700 feet boiling wa water water wa- wa atel a- a ter tel was found and the statement was then made trade that a little farther down downall downall all alt matter was molten yet on passing the foot 2000 level the temperature decreased decreased decreased de de- creased the union shaft at a depth of feet having a n more comfortable temperature than could be found halfway halfway halfway half half- way to the surface In the Lal Lake e Superior region these Irregular conditions are conspicuous Here there appears to be a n local cold zone as os is demonstrated in the Calumet Cal Cal- and Hecla shaft where at feet the temperature was 79 degrees Fahrenheit or only 20 degrees warmer than at a depth of feet |