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EDITED BY |
BACTERIA
BACTERIA
ESPECIALLY AS THEY ARE RELATED
TO THE ECONOMY OF NATURE
TO INDUSTRIAL PROCESSES
AND TO THE PUBLIC HEALTH
BY
GEORGE NEWMAN
M.D., F.R.S. (Edin.), D.P.H. (Camb.), etc.
DEMONSTRATOR OF BACTERIOLOGY IN KING'S COLLEGE, LONDON
ILLUSTRATED
NEW YORK
G. P. PUTNAM'S SONS
LONDON
JOHN MURRAY
1899
Copyright, 1899
BY
G. P. PUTNAM'S SONS
The Knickerbocker Press, New York
PREFACE
The present volume is not a record of original work, noris it a text-book for the laboratory. Theoretical andpractical text-books of Bacteriology plentifully exist both inEngland and America. There are two large works widelyused, one by Professor Crookshank, entitled Bacteriology andInfective Diseases, the other by Dr. Sternberg, A Manual ofBacteriology. There are also, in English, a number of smallerworks by Abbott, Ball, Hewlett, Klein, Macfarland, Muirand Ritchie, and Sims Woodhead. This book is of a lesstechnical nature. It is an attempt, in response to the editorof the series, to set forth a popular scientific statement of ourpresent knowledge of bacteria. Popular science is a somewhatdangerous quantity with which to deal. On the onehand it may become too popular, on the other too technical.It is difficult to escape the Scylla and Charybdis in sucha voyage.
I am much indebted to Professor Crookshank, who, inreading the manuscript, has helped me by many valuablecriticisms. My thanks are also due to Sir C. T. D. Acland,Bart., for many kind suggestions, and to Mr. E. J. Spitta,M.R.C.S., who has been good enough to take a number ofexcellent photo-micrographs for me. So