1776 - Science

Science

Journey Through Various Provinces of the Russian Empire (Reise durch verschiedene Provinzen des russischen Reichs) by naturalist Peter Simon Pallas is published in its third and final volume, the first having appeared in 1771 (see 1768). Now 35, Pallas returned to St. Petersburg 2 years ago, his health having been destroyed by his travels. He has advanced a theory of mountain formation based on study of Siberia's Ural and Altai ranges, where he has recognized a temporal sequence of rocks from the center of a range to its flanks.