PROCEEDINGS. XIII 



Committee on Communications Richard Rathbun, Walter 

 B. Barrows, John Murdoch. 



Committee on Publications C. D. Walcott, R. E. C. Stearns, 

 F. H. Knowlton, T. S. Palmer, F. V. Coville. 



Committee on Trees and Shriibs Lester F. Ward, Geo. 

 Vasey, F. H. Knowlton, Th. Holm, F. V. Coville. 



Mr. C. D. Walcott presented a paper on the DISCOVERY 

 OF VERTEBRATE LIFE IN LOWER SILURIAN (Ordovician) 

 STRATA.* Discussed by Dr. Gill. 



Prof. Henry F. Osborn gave a REVIEW OF THE DISCOVERY 

 OF CRETACEOUS MAMMALS, t Discussed by Dr. Gill. 



ONE HUNDRED AND SEVENTY-THIRD MEETING, 

 February 21, 1891. 



The President in the chair, and twelve members present. 

 Dr. Cooper Curtice read a paper entitled SOME LITTLE 

 KNOWN WORMS IN CATTLE. Discussed by Mr. Holzinger. 



ONE HUNDRED AND SEVENTY-FOURTH MEETING, 

 March 7, 1891. 



The President in the chair, and twenty-five members 

 present. 



Mr. F. A. Lucas exhibited and described some young 

 HOATZINS. Discussed by Dr. Dall. 



Mr. Lucas also drew attention to a SPECIMEN OF BISON 



LATIFRONS FROM PEACE CREEK, FLORIDA. 



Dr. Bean spoke of the FISHES OF GREAT SOUTH BAY.^ 

 Mr Rose spoke of A NEW ASTER FROM SOUTHERN CALI 

 FORNIA^ Discussed by Mr. Holzinger and Mr. Waite. 



*Bull. Geol. Soc. Amer. Vol. iii, 1891 (in press). See also Proc. Phila. 

 Acad. 



t American Naturalist, xxv, July, 1891, pp. 295-611. See also Proc. 

 Phila. Acad. 



t Nineteenth Report of the Commission of Fisheries of New York, 

 1891, pp. 237-281. 



. Gazette, Vol. xvi, 1891, p. 113. 



