Excerpt from Iron-Depositing Bacteria and Their Geologic Relations In the field work many iron springs, bogs, mines, and streams were examined for the presence of deposits of ferric hydroxide, and when found samples were taken to the labora tory and examined microscopically and some of them chemically. The morphology of the organisms was studied and laboratory cultures were made from them in attempts to study the physiology. Many different iron compounds were used in the laboratory work. Organic as well as inorganic, and the activity of the organ isms in precipitating ferric hydroxide from each compound was studied. 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.