Publisher's Synopsis
Excerpt from The Geological and Natural History Survey of Minnesota: The Nineteenth Annual Report, for the Year 1890
But the scientific effort which showed itself in so rich a de gree in the direction mentioned, led soon to the knowledge that in this path there were yet large gaps which must be filled up or at least bridged over, if a sure step forward would be taken. And in response to this generally felt need, Rosenbusch2 hast ened to place a practical guide in the hands of microscopic mineralogists and geologists, in order to place before their eyes, through the well ordered collection of diagnoses of the rock-bearing minerals, as far as at that time possible, a clear picture of the territory then known. And in an indirect way to make evident to them the uncertain spots and the gaps.
The next result of these endeavors was a work in the micro scopic research of minerals and rocks, elevated high above the common level, which substantially enriched our knowledge in many directions, especially in respect to the micro-structure of rocks. It gave. However, occasion for many complications, in that often in place of positive results, only the old pillars of knowledge were overthrown and the insufficiency hitherto, of our means for new structures either public or private was shown, or in that only temporary buildings were erected upon the old foundations.
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.
