THE PLANT WORLD 



INDEX TO CONTENTS OF VOLUME TWENTY-TWO, 1919 



Agricultural Index; Note 219 



Appleman, C. 0. Preparation of Seed Potatoes; Review 91 



Bailey, L. II. Nursery Manual; Note 313 



Berry, E. W. Geologic History of the Sweet Gum and Witch 



Hazel 345 



Blatter, E. and Hallberg, F. Flora of the Indian Desert; Note.. 149 



Boerker, H. II. 1). Our National Forests; Review 92 



Botanical Absi racts; Note 275 



Bowman, H. H. M. Physiology of the Mangrove; Review 146 



Brewster, D. R. Growth of Conifers; Review 24 



Britton, N. L. and Rose, J. N. Monograph of the Cactaceae; 



Review 270 



Campbell, D. H. Work of; Note . 57 



Chamberlain, C. J. Cycads; Review 364 



Chase, T. S. Desert Trails; Note 367 



Cheeseman, T. F. Macquarie Island ; Note 184 



Church, Margaret B. Root Contraction 339 



Classification of Vascular Plants. H. S. Conard 59 



Club Root. L. 0. Kunkel; Review 93 



Coit, J. E. and Hodgson, R. W. Work on oranges; Note 94 



Comparison of the Vegetational Features of Desert Mountains. 



Forrest Shreve 291 



Conard, H. S. Classification of Vascular Plants 59 



Conditions Affecting Potentiality of the Seed. F. Kidd and C. 



West; Review 363 



Conditions of Fruitfulness. E. J. Kraus and H. R. Kraybill 



Review 23 



Cook, M. T. New Economic Botany; Review 309 



Correlation of Wind Flow and Temperature with Evaporation. 



C. A. Shull 210 



Coulter, J. M. and Coulter, M. C. Plant Genetics; Review 181 



Cycads. C. J. Chamberlain; Review '. 364 



deBooy, T. Work of; Note 57 



Dey, P. K. Penetration of Bean Cuticle; Review 250 



Dorety, Helen A. Morphology of the Cycads; Review 126 



Dorsey, M. J. Fruitfulness of the Plum; Note 185 



Dosdall, Louise. Water Requirement and Adptation in Equi- 



setum 1, 29 



Duggar, B. M. Some Factors in Research 277 



Early Spring at Grand Canon. Alice Eastwood . 95 



Eastwood, Alice. Early Spring at Grand Canon 95 



3 



