Excerpt from The Structure and Functions of Bacteria
Seeing that there is at the present time no lack of treatises upon bacteria, the publication of yet another needs some apology. Such an apology is expressed in the title, Lectures on Bacteria. The lectures arc intended to be an introduction to general bacteriology. They purpose to give a survey that shall collect and condense the innumerable special researches into a connected whole, and indicate in broad outlines the present position and extent of bacteriological science.
Besides those medical aspects of bacteriology which in other treatises occupy, rightly enough, the chief place, attention is drawn to the importance of bacteria in agriculture, and to the parts they play in the great fundamental processes of life - the circulation of nitrogen and carbon dioxide. Furthermore, it seemed desirable to point out and emphasize the advancement that general physiology has received from bacteriological investigations. Finally, an attempt has been made to remove the bacteria from the isolated position to which their morphological and physiological peculiarities had relegated them, and, by comparative studies, to indicate their relations to other organisms.
A treatment of the subject on these lines that should be at the same time not too bulky, seemed to me to be wanting. I therefore undertook the publication of the course of lectures I have delivered for some years to students of biology, pharmacy, and agriculture, with here and there among them - as it were like a white raven! - a medical student.
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