Show underground mountains the conductors of the Tri gonom ethical survey in india made a discovery ahey have rea son to believe that there Is in the middle of india an underground or burled mountain range a thousand miles in length which lies parallel with the himalayas the conclusion Is based on the peculiarities ot the local attraction of gravitation the plumb line being deflected southward on the north side of the supposed un chain and northward on the south side the inference Is that a great elongated mass of rock of ex density underlies the surface of the earth between the two observing stations |