OPEN COURT PUBLICATIONS 
ON SCIENCE AND PHILOSOPHY 
FOUR IMPORTANT BOOKS BY HUGO DE VRIES 
The Mutation Theory | 
“Experiments and Observations on the Origin of Species in the Vegetable Kingdom 
VOLUME I. NOW READY VOLUME II. IN PRESS 
ProFEssor J. B. FARMER and A. D. DARBISHIRE 
Translators : 
VOLUME L. 
Origin of Species by Mutation 
582 pp. 1r4 illustrations, Six colored sea (lithographs). Bibliography and index. 
Pri 4 net (18s.). 
shite oery of ‘he origin of species, 
passages data are cited, and the results pre “a Praleasre de Vries 
are described. 
The 
in gies poser Sacer: fs Amsterdam durin, 
Plant Breeding 
Comments on the ae of NILSSON and BURBANK 
A scientific book in simple real Intensely interesting as well as instructive. 
Of special value to every botanist, resets 3% an boeeig: 
Illustrated with 114 caeher half-tone ae fro. d fine fp in large type: 
Cloth, gilt top. Price, $1.50 net, een $x. 70. 
Pp. xv.-+-360. 
Supplied by your dealer; or direct, on receipt of your order with the mailing price. 
Send for complete catalogue. 
lume 
Al l f the | f i - or later lead to the possibility of inducing mutations at will ani 
of originating perfectly r has enabled us to pro- 
uce + er reater in oa and i in ‘en sO a control or the mutative process will, it is hoped, place in our 
hands, the power of originati ng permanently nd plant ts 
I llular P i 
ntraceliular ee 
(In press,) 300pp. Cloth, $3, 
An investigation of the psychology of — especially the facts of variation and atavism. A critical survey of 
creeiod = of — from th ll-life is followed by a summary of the 
hypothesis of pange: 
The third part oft he bool i f a chap Paver and Hybridization. 
Th whole science of vital pt i tai what t De _ — the Pangen,a special hereditary character, 
which may de the obj i 1 in plants. It is a most attractive theory, 
and the book i is so truly s ecicaifc ind it be easily r read and understood by the 
hol nt tt as a as the meen breeder will find in it many fine inspirations. 
ny ° e . * e > 
Species and Varieties: Their Origin by Mutation 
Second Edition, gia as Corrected and Revised, with Por : 
oe eee id, $5.00 (21s,) net. xxiii+83 ges. 8vo. ae ai ‘op. 
dabl d | recital of f; f ish the ¢ basis for the 
All a +} oka rae ae ad a clarify ing 
gti more — 
— 
378-388 WABASH AVENUE 
CAGO 
OPEN COURT PUBLISHING COMPANY 
