Author: Charles Atwood Kofoid
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 15

Get Book Here

Book Description

Author: Charles Atwood Kofoid
Publisher: Forgotten Books
ISBN: 9780266627418
Category :
Languages : en
Pages : 24

Get Book Here

Book Description
Excerpt from The Fresh-Water Biological Stations of America This supremacy of interest in marine biology is not, however, confined to the seaside laboratory; it finds its way into text books and schoolrooms. Laboratory guides in which marine types very largely predominate are not unknown, and too many a teacher of biology in collegiate courses and in the secondary schools of our inland towns depends upon marine forms for laboratory study and demonstration, to the sad neglect of the fauna with which both he and his pupils come in daily contact. From a pedagogical point of view this element of remoteness in the objects of study is unfortunate, for it tends to abridge the sympathetic contact with nature and the development on the part of the pupil of a lively interest in the world of life about him, a feature of large cultural value in all biological education. The writer has found a widespread feeling in biological circles that the fresh-water environment affords far less of value for investigation and instruction than the marine. Considered merely volumetrically, the marine fauna may well have the advantage, but all the general problems of biology can be approached with ease, and at times to even greater advantage at the fresh-water station; and, furthermore, in variety and rich ness the fauna of fresh water, in some localities at least, com pares very favorably with that at the seaside. It may then be that one of the functions of the fresh-water station is to preserve and foster an interest in fresh-water life and to empha size its availability and utility for purposes of instruction. In no sense of the word, however, are the marine and fresh-water stations to be regarded as rivals; each is the necessary comple ment of the other, and both alike have their place in the field of biology. 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.

Author: Melvin L. Warren, Jr.
Publisher: Johns Hopkins University Press
ISBN: 1421435128
Category : Science
Languages : en
Pages : 934

Get Book Here

Book Description
H. Wilson

Author: Henry B. Ward
Publisher:
ISBN:
Category :
Languages : en
Pages : 15

Get Book Here

Book Description

Author: Charles Atwood Kofoid
Publisher:
ISBN:
Category : Biological laboratories
Languages : en
Pages : 492

Get Book Here

Book Description

Author: John D. Wehr
Publisher: Elsevier
ISBN: 0123858771
Category : Science
Languages : en
Pages : 1067

Get Book Here

Book Description
Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. The book provides essential taxonomic and ecological information about one of the most diverse and ubiquitous groups of organisms on earth. This single volume brings together experts on all the groups of algae that occur in fresh waters (also soils, snow, and extreme inland environments). In the decade since the first edition, there has been an explosion of new information on the classification, ecology, and biogeography of many groups of algae, with the use of molecular techniques and renewed interest in biological diversity. Accordingly, this new edition covers updated classification information of most algal groups and the reassignment of many genera and species, as well as new research on harmful algal blooms. Extensive and complete Describes every genus of freshwater algae known from North America, with an analytical dichotomous key, descriptions of diagnostic features, and at least one image of every genus. Full-color images throughout provide superb visual examples of freshwater algae Updated Environmental Issues and Classifications, including new information on harmful algal blooms (HAB) Fully revised introductory chapters, including new topics on biodiversity, and taste and odor problems Updated to reflect the rapid advances in algal classification and taxonomy due to the widespread use of DNA technologies

Author: Henry Baldwin Ward
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 1130

Get Book Here

Book Description

Author: H. A. Jack
Publisher: READ BOOKS
ISBN: 9781406755145
Category : Science
Languages : en
Pages : 80

Get Book Here

Book Description
PREFACE. THE Author of this very practical treatise on Scotch Loch - Fishing desires clearly that it may be of use to all who had it. He does not pretend to have written anything new, but to have attempted to put what he has to say in as readable a form as possible. Everything in the way of the history and habits of fish has been studiously avoided, and technicalities have been used as sparingly as possible. The writing of this book has afforded him pleasure in his leisure moments, and that pleasure would be much increased if he knew that the perusal of it would create any bond of sympathy between himself and the angling community in general. This section is interleaved with blank shects for the readers notes. The Author need hardly say that any suggestions addressed to the case of the publishers, will meet with consideration in a future edition. We do not pretend to write or enlarge upon a new subject. Much has been said and written-and well said and written too on the art of fishing but loch-fishing has been rather looked upon as a second-rate performance, and to dispel this idea is one of the objects for which this present treatise has been written. Far be it from us to say anything against fishing, lawfully practised in any form but many pent up in our large towns will bear us out when me say that, on the whole, a days loch-fishing is the most convenient. One great matter is, that the loch-fisher is depend- ent on nothing but enough wind to curl the water, -and on a large loch it is very seldom that a dead calm prevails all day, -and can make his arrangements for a day, weeks beforehand whereas the stream- fisher is dependent for a good take on the state of the water and however pleasant and easy it may be for one living near the banks of a good trout stream or river, it is quite another matter to arrange for a days river-fishing, if one is looking forward to a holiday at a date some weeks ahead. Providence may favour the expectant angler with a good day, and the water in order but experience has taught most of us that the good days are in the minority, and that, as is the case with our rapid running streams, -such as many of our northern streams are, -the water is either too large or too small, unless, as previously remarked, you live near at hand, and can catch it at its best. A common belief in regard to loch-fishing is, that the tyro and the experienced angler have nearly the same chance in fishing, -the one from the stern and the other from the bow of the same boat. Of all the absurd beliefs as to loch-fishing, this is one of the most absurd. Try it. Give the tyro either end of the boat he likes give him a cast of ally flies he may fancy, or even a cast similar to those which a crack may be using and if he catches one for every three the other has, he may consider himself very lucky. Of course there are lochs where the fish are not abundant, and a beginner may come across as many as an older fisher but we speak of lochs where there are fish to be caught, and where each has a fair chance. Again, it is said that the boatman has as much to do with catching trout in a loch as the angler. Well, we dont deny that. In an untried loch it is necessary to have the guidance of a good boatman but the same argument holds good as to stream-fishing...

Author: Henry Baldwin Ward
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 1130

Get Book Here

Book Description

Author: James George Needham
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 200

Get Book Here

Book Description