VI 



CONTENTS 



VOLUME LXIX 



Ripening of pears and apples as modified by extreme 



PAGE 



temperatures 



- E. L. Overholser and R. H. Taylor 273 



Diaphragms of water plants. II. Effect of certain 

 factors upon development of air chambers and 



diaphragms (with three figures) 



- Laetitia M. Snow 297 



Life history of Fossombronia cristula. Contributions 

 from the Hull Botanical Laboratory 264 (with 



plates XVI-XIX and one figure) 



-« Arthur W. Haupt 318 



Residual effects of carbon dioxide gas additions to soil 



on roots of Lactuca sativa (with five figures) H. A. Noyes 



and /. H. Weghorst 332 



y 



Leaf-base phyllodes among the Liliaceae (with four 



figures) 



Agnes Arber 337 

 G. H. Duff 341 



Development of the Geoglossaceae - 



Temperature and rate of moisture intake in seeds 



(with four figures) ------ Charles A. Skull 361 



Petiolar glands in the plum (with plates XX, XXI) 



M. J. Dorsey and Freeman Weiss 391 



Inheritance of aleurone color in maize. Contribu- 



■ 



tions from the Hull Botanical Laboratory 265 - Merle C. Coulter 407 

 Bulbils of Lycopodium lucidulum (with twenty-one 



figures) 



Tendrils of Smilax (with plate XXII) - 



Ecological succession of mosses. Contributions from 

 the Hull Botanical Laboratory 266 (with two 



R. Wilson Smith 426 

 Agnes Arber 438 



figures) 



Aravilla M. Taylor 449 



Ovuliferous structures of Taxus canadensis. Con- 

 tributions from the Hull Botanical Laboratory 

 267 (with plate XXIII and sixty figures) - 



Rot of date fruit (with five figures) - 



A. W. Duplet 492 

 /. G. Btown 521 



Briefer Articles 

 William Gilson Farlow - - - 

 The Cinchona Station - 

 Chromosome number in the Sequoias 



Roland Thaxtet 



Current Literature 



83 



D. S. Johnson 347 



- T. H. Goodspeed 



and M . P. Crane 348 



88, 183, 269, 350, 443, 530 



For titles of book reviews see index under author's 



name and reviews ' 



Papers noticed in "Notes for Students" are 



indexed under author's name and subjects 



