Excerpt from A Laboratory Guide in Bacteriology: For the Use of Students, Teachers, and Practitioners The Considerations which led the writer to add this laboratory guide of bacteriology to the number of such guides already in existence were of various nature and may be brie y set forth here. Probably no branch of biological science has advanced so rapidly during the past few years as the science of bacteriology, and it is difficult even for an active labora tory worker to keep abreast of this advance. A text book or guide fixes the status of the science at the time of its writing, but almost before it leaves the press it becomes antiquated. Revisions, corrections, and addi tions are necessary at short intervals in order to keep a publication of this kind approximately up to date. There is therefore, almost at any given moment room for a new publication to fill the want of a progressive instructor for a guide that gives the latest accepted rules and practices of the laboratory. The value of such a publication will be enhanced by a plan and arrangement of sufficient exibility and latitude to allow the instructor and the student to enter such additions and corrections as serve to bridge over the time between editions. 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."