A Prussian official tninlng experi has m...

A Prussian official tninlng experi has made investigation of the eoal strata of the world, and expresses the belief that the coal deposits of Austria-Hungary, Prance and Belgium will be exhausted in five centuries at most. Those of Great Britain and Russia will follow, and last of all the Germau strata will give out The American supply, he expects will not last lonsrer than the European.