PROCEEDINGS. XIII 



Comjnittee on Comnninications — Richard Rathbuii, Walter 

 B. Barrows, John Murdoch. 



Co}mnittee on Publicatiojis — C. D. W'alcott, R. h^. C. Stearns. 

 F. H. Knowlton, T. S. Pahner, F. \'. Coville. 



Committee on Trees and Shrubs — 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.* Discu.ssed by Dr. (.rill. 



Prof. Henry F. Osborn gave a Review of the Discovery 

 OF Cretaceous Mammals. t Discus.sed bv 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 Specimf:n of Bison 



LATIFRONS FROM PEACE CrEEK, FLORIDA. 



Dr. Bean spoke of the Fishes of Gre.yt 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, Juh-, 1S91, pp. 295-611. See also Proc. 

 Phila. Acad. 



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

 1891, pp. 237-281. 



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



