LIST OF ILLUSTRATIONS. 



FULL-PAGE PLATES. 



FACING PAGE. 



Plate I. Forms of Fresh Water Algae 50 



II. Cones and Seeds of the Douglas Spruce ... 66 



III. Varieties of Coffee Berries 82 



IV. The Hart's Tongue 130 



V. Organs of Mosses l-iB 



VI. Flowers of Blde7is heterophyUa, in vase. ... 161 



VII. Flowers of Bidens heterophylla^ natural size 162 



VIII. Root Hairs 182 



TEXT FIGURES. 



PAGE 



Scrub Oaks 2 



General Aspect of Scrub Oak Plain 3 



Abnormal Leaf of Buckeye , 53 



Abnormal Forms of Dogwood (figs. 1, 2, 3) 57 



The Snake-mouth Pogonia, showing root system 123 



Quaker Bridge, New Jersey 124 



Flowers of Pipsissewa ] 43 



Flower of Iris pumila 180 



The Crested Iris {Iris cristata) 180 



An Indoor Rockery 186 



Horticultural Building, Pan-American Exposition 189 



INDEX OK AUTHORS. 



PAGE 



Beal, W. J 182 



Berry, E. W 66 



Brush, Edward Hale 188 



Burglehaus, F. II 164 



10062 



