52 



Finance, J. I. Kane, C. F. Cox ; Admissions, E. S. Burgess, 

 Delia W. Marble, John K. Small ; Local Flora, PJiancrogamia, 

 N. L. Britton, E. P. Bicknell, Fanny A. Mulford, W. W. Eggle- 

 ston ; Local Flora, Cryptogamia, L. M. Underwood, M. A. Howe 

 W. A. Murrill, Elizabeth G. Britton ; Program, N. L. Britton, M. 

 A. Howe, L. M. Underwood ; Field Excursions, Eugene Smith, 

 Geo. V. Nash, Marie L. Sanial, E. W. Berry, Percy Wilson, H. 

 H. Rusby ; Delegates to the Council of the Scientific Alliance, 

 H. H. Rusby, N. L. Britton, Addison Brown ; Delegates to the 

 Lnternational Botanical Congress at Vienna, N. L. Britton, L. M. 

 Underwood. 



Of the scientific program, the first paper, which was illustrated 

 by lantern slides, was by Dr. George H. Shull, and was entitled 

 " Stages in the Development of Slum cicutaefolijim." Dr. Shull 

 presented briefly the great range of leaf-form in this species at 

 different stages of growth, concluding that these various stages 

 give no safe indication of ancestral forms. 



The life-cycle of Slum fits it for the conditions under which it 

 grows at different stages of its growth, it being mesophytic, hy- 

 drophytic and xerophytic in turn. This cycle of changes seems 

 to be independent of external conditions and proceeds regularly 

 without regard for the environment. The consideration of a 

 number of rejuvenated buds shows that rejuvenescence may be 

 brought about by submerging senescent buds in water, and that 

 the later the stage of senescence the earlier will be the juvenile 

 forms which are induced to appear. Evidences were presented 

 tending to prove that the proximal leaflets of pinnate leaves are 

 homologous in any series of leaves taken from the same plant 

 and that the other leaflets are likewise homologous counting from 

 the proximal pair. 



The paper was the subject of considerable discussion. 



The .second paper was by Dr. Tracy E. Hazen, on " Recent 

 Advances in the Phylogeny of the Green Algae." The subject 

 was introduced by a sketch of liorzi's group Confcrvalcs, now en- 

 larged into the class Heterokontac, comprising genera showing 

 natural affinities, taken from the three old orders Protococcales, 

 Confervales and Siphoneae. This new class, accepted by all 



