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Excerpt from Handbook of Protozoology With regard to their habitat, the Protozoa may be divided into free-living forms and those living on or in other organisms. The vegetative, or trophic, stages of free-living Protozoa have been found in every type of fresh and salt water, in soil and in decaying vegetable matter. While the freshwater inhabiting forms are ordinarily unable to live in salt water, and vice versa, seemingly one and the same species has, in a number of cases, been found in both fresh and salt waters. 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 Protozoology HE present work is similar in its primary aim to that of its predecessor, Handbook of Protozoology in presenting introductory information on the common and representative genera of all groups of both free-living and parasitic Protozoa, to advanced undergraduate and graduate students in zoology in colleges and universities. With the expansion of courses in proto zoology at the University of Illinois and elsewhere, it seemed ad visable to incorporate more material for lecture and discussion, in addition to the enlargement of the taxonomic section. The change of the text-contents has, therefore, been so extensive that a new title, Protozoology, is now given. Chapters 1 to 6 deal with introduction, ecology, morphology, physiology, reproduction, and variation and heredity, of Proto zoa. Each subject-matter has been considered in the light of more recent investigations as fully as the space permitted. Selection of material from so great a number of references has been a very difficult task. If any important papers have been omitted, it was entirely through over-sight on the part of the author. 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 Elementary Bacteriology and Protozoology The general remarks concerning parasites apply alike to protozoa and bacteria, but in medicine there is at the present time more interest in the bacteria. For this reason only a few diseases caused by protozoa are important. 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.
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Excerpt from An Introduction to the Study of the Protozoa: With Special Reference to the Parasitic Forms This book, as its name, is intended to serve as on introduction to the subject with which it deals, and not in any way as a complete treatise upon it. The science of "protozoology," as it is now generally termed, covers a vast field, and deals with an immense series of organisms infinitely varied in form, structure, and modes of life. In recent years the recognition of the importance of the Protozoa to mankind in various ways, and especially from the medical point of view, has focussed attention upon them, and has brought about a great increase of our knowledge concerning these forms of life. To set forth adequately and in full detail all that is now known about the Protozoa would be a task that could not be attempted in a volume of this size, but would require a work many times larger. The aim of the present work is essentially didactic - that is to say, it is intended to furnish a guide to those who, having at least some general knowledge of biology, desire a closer acquaintance with the special problems presented by the Protozoa. First and foremost, it attempts to define the position of these organisms in Nature, and to determine, as far as possible, in this way exactly what should be included under the term "Protozoa," and what should be excluded from the group. Secondly, its function is to guide the student through the maze of technicalities necessarily surrounding the study of objects unfamiliar in daily life, and requiring, consequently, a vocabulary more extensive than that of common language; and with this aim in view, care has been taken to define or explain fully all technical terms, since confusion of thought can be avoided only by a clear understanding of their exact significance and proper application. Thirdly, it aims at introducing the student to the vast series of forms comprised in the Protozoa and their systematic classification, based on their mutual affinities and inter-relationships, so far as these can be inferred from theif structural peculiarities and their life-histories. 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 Pamphlets on Protozoology (Kofoid Collection) En Roumanie le paludisme est répandu sur presque toute la surface da pays mais c'est surtout dans les régions avoisinant le Danube et dans la région da Prat entre autres qu'on trouve de nombreux foyers paludi ques. 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 Protozoology, Vol. 1 of 2: A Manual for Medical Men, Veterinarians and Zoologists The subject of Protozoology has, in recent years, shown a tendency to become divided into two sections. In the one the student's attention is directed chiefly to the study of free-living Protozoa, in the other to parasitic forms, more especially those which give rise to disease in man and domestic animals. Such a division, if it becomes absolute, cannot lead to a clear understanding of the group as a whole, for it is evident that without some knowledge of free-living Protozoa, from which they have been undoubtedly evolved, a wrong conception of parasitic forms will be obtained. As in other branches of science, specialization appears to be inevitable if any advance is to be made, but however specialized a student becomes, it is his duty to keep himself informed of any progress made outside his particular field. Anyone who wishes to make an intel ligent study of parasitic Protozoa must be acquainted with the funda mental principles of general Protozoology, and, indeed, with those of general Zoology, Physiology, and even other sciences. This is merely another way of stating the well-recognized fact that all sciences are inter dependent. On this account the student of the Protozoa which are pathogenic to man and domestic animals should have a sound knowledge of other parasitic Protozoa, and at least a good working knowledge of non-parasitic forms as well. Conversely, those who study free-living Protozoa should have a clear conception of the parasitic forms, for the extensive investigations of recent years have contributed so much to our knowledge that in many respects they are better known than their free living relations, particularly as regards the completeness of their life histories and the probable course of their evolution. In this manual the writer has attempted to present the subject of Protozoology in such a light that it will be of use to the zoologist who wishes to obtain information regarding the general principles of the subject and detailed knowledge of parasitic forms, and to medical men and veterinarians who are chiefly concerned with those Protozoa with which they have professionally to deal. 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 Protozoa in Biological Research Numerous textbooks of varying degrees of excellence for the study of Protozoa are now on the market and should be consulted for a general treatment of these unicellular forms. This volume will not fill such a need, but has been prepared as a result of a discussion by a group of specialists assembled during the summer of 1937 at the Marine Biological Laboratory at Woods Hole, Massachusetts, for the purpose of ascertaining the best means to stimulate further research on these unicellular animals. As a result of these discussions it was decided that one good way to attain our end would be to have a group of specialists in the field Of protozoology prepare a work on research in this field, each specialist to provide a chapter on the subject in which he is best known, and about which he can speak with authority. Our first real difficulty was to select a limited number of topics from a vast number of possibilities, and then to choose the biologists who, in our opinion, were the best men to write these chapters. As can be readily imagined, this opened up a long list of difficulties and led to many vexatious troubles, but the present work, finally, is the Outcome. 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 The Biology of the Protozoa A protozoon is a minute animal organism, usually consisting of a single cell, which reproduces its like by division, by budding, or by spore formation and whose protoplasm has passed, or will pass, through various phases of vitality collectively known as the life cycle. 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.