Calcutta Geographical Review December 1944

The chief reason for this assumption was the existence of the triple wall of the Vindliyas Satpuras and Ajantas aided by the presence of the 'Thar Desert on the west and partly also by the valleys of the Narmada (Narbada) Tapti aril Sone which tempted and facilitated east-west movements. [...] The Proto-Australoids the inhabitants of the hills and jungles of the Central Indian highlands were the first to follow the Negritos. [...] But partly by an effort of imagination and partly by an interpretation of the records contained in the sediments structures fossils and land forms of the Ghaggar Plain itself and another allied area the Potwar Plateau which has escaped the obliterating mantle of the PosTertiary alluviation it is possible to form sonic conception of the appeaance of the country in the different periods. [...] Mesozoic.—During the Mesozoic period sediments from the penisular highlands of the south built of the irOn-bearing Dharwar and Archaean rocks (including the Delhi and Aravalli series) were tranported by the north-flowing rivers of the Gondwana continent and dicharged in the lagoons of the receding gulf. [...] In lower Tertiary times before the existing loads of silt had been brought down from the mountains by the rivers this trough was a narrow arm of the sea." The Fullers Earth and the Tertiary coal of Bikaner.(Palana) were laid down during the Eocene period.' In the middle of the Miocene period the sea finally retreated from the whole of the northern India and with minor oscillations the plain