Interior Of The Earth's Surface

Tho grcaiest dgpth of tho earth hitherto attained by man's explon not roaohed moro than ono mile fi'oui tho siirfaco; hen - as has somewhcro been romarked by Profi bes - it is reiaeml it the diameter of thü earth is but littte short of eight thousand miles, the disproportion oí oui -studies between thu surfacu and interior of our planot is aiugulariy apparcut, Every Bea has been teaverwd ïrom lolo topólo; tho ilcso.rt, tho prairie, tho great forest and the inlaad rivor founta havo ulike becu explcied. All I ces provo with wl ua of the eo . and thi aoe the i b tractor of isa distantplan beno one mile down. Wliat, however, h med, "üiu thia shallo1 ishing. It 1 t that tho earth is nol a olid sü oontrary, that ithasa fluid i -th a BoÏÏd orust, relativoly i 1 ' . porilwl B a uuue v&r' w l---w arise of I anlicit. At nvi u would be i ■ ■ ' vhic id the ■ verifying experimental tii.' unce of vol urta " l'lu world, the perpetual of boiling vraterin Iceland and Culiforaia, and oí' warm water in Englaud and elsowhare, tught to olearly provo the theory of Bubterrauoan