This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Concepts of Biology is designed for the introductory biology course for nonmajors taught at most two- and four-year colleges. The scope, sequence, and level of the program are designed to match typical course syllabi in the market. Concepts of Biology includes interesting applications, features a rich art program, and conveys the major themes of biology. The images in this textbook are grayscale.

In this book we will strive to meet nine goals: First we will define life. What characteristics does an organism have to posses to be alive? Then we will look at the smallest unit of life: the cell. What does it look like? Where does it come from? What is it made of and how does it work? How does it differentiate into an adult? How does it produce special substances? And why does it eventually die? Then we will discuss anatomy and physiology. What organ systems do higher life forms possess and how do they work? We will discuss genetics. How do living things inherit characteristics from the parents, and how do they adapt and evolve? We will discuss some of the medical conditions that affect higher life forms. And what they need from their environment. Finally we will discuss the unique gifts that living organisms posses. I hope you find this to be as enjoyable as I did.

Excerpt from An Introduction to General Biology Several years ago it was our good fortune to follow, as graduate students, a course of lectures and practical study in General Biology under the direction of Professor Martin, at Johns Hopkins University. So interesting and suggestive was the general method employed in this course which, in its main outlines, had been marked out by Huxley and Martin ten years before, that we were persuaded that beginners in biology should always be introduced to the subject in some similar way. The present work thus owes its origin to the influence of the authors of the "Elementary Biology," our deep indebtedness to whom we gratefully acknowledge. It is still an open question whether the beginner should pursue the logical but different course of working upwards from the simple to the complex, or adopt the easier and more practical method of working downwards from familiar higher forms. Every teacher of the subject knows how great are the practical difficulties besetting the novice, who, provided for the first time with a compound microscope, is confronted with Yeast, Protococcus, or Amoeba; and on the other hand, how hard it is to sift out what is general and essential from the heterogeneous details of a mammal or a flowering plant. In the hope of lessening the practical difficulties of the logical method we have used for some time with our own classes, and have found practical and effective. It has not been our ambition to prepare an exhaustive 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.