Excerpt from The Azoic System and Its Proposed Subdivisions Packard's Observations in 1865 he recognizes there, on very inadequate evidence, the Laurentian and Huronian, 381 labradorite rocks seen, apparently eruptive, but called by him N orian, 381 hind refers the rocks of Labrador to the Lau rentian on lithological grounds, 381 wilkins holds the same views, calling a dike Norian, 382. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.