Excerpt from A Sketch of the Natural History of the Diatomace These few words, by way of an introduction, have been deemed meces sary, so that the general reader, into whose hands these volumes may come, might understand that the geological survey of New Hampshire has been the first of our state surveys which has possessed a special microscopist, a person who has turned his attention particularly to the study of the application of that instrument, aided by other means of research, to the investigation of geology. It is true that similar investi gations have been made to some extent, by others as well as himself, for other surveys; but in no case hitherto have special collections been made systematically, and in such a manner that any very valuable results have been arrived at, for, in this branch of science as well as in others, a defi nite end should be had in view, and the specimens collected and the examinations made be for that end. It has remained for the state of New Hampshire to be the first to inaugurate a thorough microscopical survey of its geology and assistant branches of science, - paleontology. 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.

Reprint of the original, first published in 1874.

Excerpt from Diatomaceae of North America: Illustrated With Twenty-Three Hundred Figures From the Author's Drawings on One Hundred and Twelve Plates Lewis, W M.D extreme and exceptional variations of Diane in White Mountains, F. W. Lewis, Philadelphia Academy of Science, 1855. 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.

Excerpt from An Introduction to the Study of the Diatomace IN making his first acquaintance with the Diatomaceae the author experienced great difficulty in obtaining concise elementary information. He had to grope his way through a mass of irrelevant literature contained in the reports of Scientific Societies, to purchase many very expensive works, and, with much difficulty, to obtain access to certain rare old volumes. The study of diatoms is attracting an ever increasing circle of microscopists. By the discovery of fossil diatoms geologists are solving many important and difficult problems. The subject is one of surpassing interest. The field of study is vast, is largely unexplored, and is within the reach of all. Beautiful living specimens abound on every hand, in unpolluted watercourses, in ponds, and in moist places. The great want appears to be a concise introduction both to the diatom and its literature. The author trusts that the following pages may to some extent supply the want. He has collected his information from the highest sources, and has not refrained, where desirable, from using the precise language of eminent writers, whose teaching is better expressed in their own words. The author acknowledges with gratitude the generous assistance of Mr. Julien Deby, F who has placed at his disposal the Bibliography appended to this treatise. 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.

Excerpt from An Introduction to the Study of the Diatomaceæ IN making his first acquaintance with the Diatomaceae the author experienced great difficulty in obtaining concise elementary information. He had to grope his way through a mass of irrelevant literature contained in the reports of Scientific Societies, to purchase many very expensive works, and, with much difficulty, to obtain access to certain rare old volumes. The study of diatoms is attracting an ever increasing circle of microscopists. By the discovery of fossil diatoms geologists are solving many important and difficult problems. The subject is one of surpassing interest. The field of study is vast, is largely unexplored, and is within the reach of all. Beautiful living specimens abound on every hand, in unpolluted watercourses, in ponds, and in moist places. The great want appears to be a concise introduction both to the diatom and its literature. The author trusts that the following pages may to some extent supply the want. He has collected his information from the highest sources, and has not refrained, where desirable, from using the precise language of eminent writers, whose teaching is better expressed in their own words. The author acknowledges with gratitude the generous assistance of Mr. Julien Deby, F who has placed at his disposal the Bibliography appended to this treatise. 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.

Excerpt from List of British Diatomaceae in the Collection of the British Museum The specimens in Roman type are mounted on slides for the microscope, and those in Italic are on Talc or Paper. 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.