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ACKNOWLEDGEMENTS. 
The author desires to express his thanks to Prof. Charles ° 
R. Barnes, of the University of Wisconsin, Prof. F. W. Woll, 
of the Wisconsin Agricultural Experiment Station and Mr. 
F. Cranefield, the author’s assistant in horticulture, for 
revision of the manuscript, and for many valuable sugges- 
tions. 
Figures 12, 13, 16, 17, 18, 19, 20, 26, 27, 28, 32, 44, 45, 
46, 47, 51, 52, 53 and 82 were copied from “ Agricultural 
Botany”, with the sanction of the author, Prof. M. C. 
Potter, of the Durham College of Science, England. Figures 
60, 61; 62,:81,'83, 96, 97; 99, 100, 101, 102; 112) Eis. 
118, 119, 120, 122 and 126 are from “The Nursery Book”, 
by Prof. L. H. Bailey, and are used by permission. Figures 
29, 58, 80, 84, 98 and 129 are from “The Amateur Fruit 
Book, by Prof. S. B. Green, and are used by permission. 
Fig. 30, is from a photograph kindly loaned by Prof. Green. 
Figures 35, 37, 38, 39, 40 and 42 are copied by permission 
of the publishers from ‘‘ Barry’s Fruit Garden”. Figures 
93 and 94 are from ‘“ How to make the Garden pay”, by 
T. Greiner, and are used by permission. Figures 64 and 
65 were copied by permission from Bulletin No. 37, of the 
Rhode Island Agricultural Experiment Station. Figures 
74, 75 and 76, are from cuts in the possession of the Wis- 
consin Agricultural Experiment Station. 
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