PROCEEDINGS. XIX 



ONE HUNDRED AND EIGHTY-FOURTH MEETING, 

 December 12, 1891. 



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 by 

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



Mr. E. M. Hasbrcmck presented some REMARKS ON Di- 

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

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



Prof. Lester 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-FRUIT TREE FROM THE SIERRAS OF CALIFORNIA. 

 Discussed by 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. 

 Discussed by Dr. Erwin F. Smith, Dr. Stiles, Dr. Dall, and 

 Professor Ward. 



