Show Earth Is It Three Spurted Is the earth eaith made mado up of or three concentric concentric concentric con con- centric spheres A physicist says that such Is the tho case cast The solid nucleus he supposes to be bo between and miles In diameter and this Is surrounded by hy a liquid substratum outside of or which Is the tho crust variously various varIous- ly estimated at seventy to lo OO miles In iii thickness More than two tso centuries ago abO a similar theory theor including the slow rotation of oC the tho inner solid sphere on a different axis from that of or tho time entire globe Iobe was held b by Dr Edmund Halley Halle to account for the lie changes In Inthe Inthe inthe the earths earth's magnetism The axis of the tho nucleus was vas thought to have been originally that of or the entire globe and to the change of or its cour course e was at attributed attributed at- at the deluge The earths earth's In Internal Internal In- In tarsal heat It Is now pointed out ma may maybe maybo bo be accounted for Cor by tho ho friction of or orth th the differently l rotating bodies |