September, 1911 
AMERICAN 
HOMES AND GARDENS 
il fi 
) NEW BOOKS , 
a 3 
A Text-Book oF GENERAL BACTERIOLOGY. 
By Edwin O. Jordan, Ph.D. Second re- 
vised edition, Svo.; 594 pp.; illustrated. 
Philadelphia and London: W. B. Saun- 
ders Company, 1910. Cloth, $3 net. 
The book is profusely and well illus- 
trated, and, since externals strike the eye 
first, it is perhaps not out of place in re- 
viewing the book to praise at the out- 
set its general arrangement and technical 
excellence. The care which has been be- 
stowed on these matters is but the out- 
ward symbol of an inner worth which is 
evidenced both in the manner of treat- 
ment and in the material presented. 
After an introductory chapter the author 
considers in order the technique of bacteri- 
ology, the structure, development and com- 
position of bacteria, the effect of physical 
and chemical agents upon them, and con- 
versely, the effects produced by bacterial 
growths upon their environment. A short 
chapter on the classification of bacteria may 
be said to conclude the first part of the book, 
dealing with the general facts of bacteri- 
ology. The chapters which follow, VII to 
XXX, deal specifically with bacteria and 
protozoa pathogenic in man. The remain- 
ing chapters deal with those aspects of bac- 
teriology which are of economical rather 
than medical interest. They include a con- 
sideration of the bacteria of milk; the bac- 
teriology of the “nitrogen cycle” in agri- 
culture, and in the economy of the living 
world; arts and industries depending on 
the action or exclusion of bacterial agents, 
such as the manufacture of leather, the cur- 
ing of tobacco, the preservation of food, 
etc. There is a chapter on the bacteria of 
air, soil and water, and, finally, one on bac- 
terial diseases of plants. An appendix is 
devoted to the consideration of infectious 
diseases of unknown causation. 
The statement on page 60 that Brownian 
movement is due to surface tension is 
hardly in keeping with recent developments 
of physics and of the Kinetic theory, in 
which this peculiar phenomenon has found 
a most interesting place. To the bac- 
teriologist this may not be a point of much 
importance, yet in view of the very con- 
siderable physical significance attached to 
the matter, and in the interest of scientific 
accuracy, the statement should be modified 
in later editions of this very excellent work. 
PRINCIPLES AND DESIGN OF AEROPLANES. 
By Herbert Chatley. New York: D. Van 
Nostrand Company, 1911. Pocket Size. 
Price, 50 cents. 
Prof. Herbert Chatley’s latest work, 
“Principles and Design of Aeroplanes,” 
might have passed as fair ten years ago, 
but in the light of the increase in knowl- 
edge of aviation during the past few years, 
it is very inadequate. At present there are 
several Farman types, the H. Farman, M. 
Farman, etc., but in this book “Mr. Far- 
man’s machine,” referred to at great length, 
is none other than the old 1907 Voisin, and 
Prof. Chatley states that the majority of 
successful machines of to-day are of this 
type. The warping of the planes on the 
Wright machines is described as “twisting 
one of the planes so that the forward edge 
goes upward on one side of the center and 
downward on the other,” whereas the man- 
ner in which the front of a Wright machine 
remains perfectly rigid and the rear ends of 
the two planes are moved is now common 
LE 
Stained with Cabot's Shingle Stains. 
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FLOOReSIDEWALK LIGHTS. 
Senor CaTALoGues 
at If your vacation has been delayed till now, 
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from cold, damp nights, which at this time 
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September is a most delightful month here 
tise 
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Special Low Summer Rates sii// 77 force. 
For Booklets and full information, address 
GEO. F. ADAMS, Manaéger, Fortress Monroe, Va. 
ee ——————et 
New York Office, 1122 Broadway i 
