Report of the Head Gardener 301 



Report of the Head Curator of the Museums and 



Herbarium 308 



Report of the Honorary Curator of the Economic 



Collection • • .313 



Report of the Director of the Laboratories . . . 315 



Report of the Librarian 324 



Report of the Superintendent of Grounds . . 348 



Schedule of Expenditures During the Year 1910 . 354 

 Report of the Chairman of the Scientific Directors 



for the Year 1910 364 



Report of the Committee on Patrons, Fellows and 



Members for the Year 1910 .... 370 



Report of the Treasurer for the Year 1910 . . 384 



Report of the Special Auditor 389 



NO. 26. OCTOBER 12, 1911. 



A Biologic and Taxonomic Study of the Genus Gymno- 

 sporangium, by Frank Dunn Kern. [Issued 

 separately, October 12, 1911.] . . . .391 



General Index 484 



Generic Index . 491 



