PROCEEDINGS. XIX 



OxE Hundred and Eighty-fourth Meeting, 

 December 12, 189 1. 



The President in the chair, and thirty-eight members 

 present. 



Mr. F. V. Coville read a paper entitled A Review of 

 Kuntze's Revisio Generum Plantarum. Discussed b}^ 

 Mr. J. N. Rose and Dr. C. Hart Merriam. 



Mr. E. M. Hasbrouck presented some Remarks on Di- 

 CHROMATISM. Discussed by Dr. W. H. Dall, Dr. Ervvin F. 

 Smith, Dr. C. Hart Merriam, and Mr. F. W. True. 



Prof. Ivester F. Ward spoke of Recent Discoveries of 

 Potomac Fossil Plants near Washington. 



One Hundred and Eighty-fifth Meeting, 

 December 26, 1891. 



The President in the chair, and twenty-six members present. 



Mr. F. H. Knowlton presented a paper entitled A FossiL 

 Bread-F^ruit Tree from the Sierras of California. 

 Discussed b^- Prof. Ward. 



Prof. Lester F. Ward presented a communication entitled 

 Alphonse de Candolle on the Transmission of Ac- 

 quired Characters. 



Dr. C. Hart Merriam made extended Remarks on the 

 Affinities of the North American Squirrels, Chip- 

 munks. Spermophiles, Prairie Dogs, and Marmots. 

 Discu.ssed by Dr. Erwin F. Smith, Dr. Stiles, Dr. Dall, and 

 Professor Ward. 



