PROCEEDINGS. XVII 



Dr. C. Hart Merriam read a paper detailing the Ravages of 

 THE Bobolink in the Rice Fields of the South.* 



One Hundred and Tenth Meeting, April 30, 1SS7. 



The President in the chair, and thirty-eight persons present. 



Dr. J. H. Kidder exhibited a rounded concretion-like mass 

 taken from the stomach of a codfish ; and also several rounded 

 grass balls from a small salt pond near Pyramid Lake. Nevada, 

 and explained their composition. These gave rise to much dis- 

 cussion, and Mr. McGee. who had collected the grass balls, de- 

 scribed the manner of their formation. 



Mr. F. A. Lucas spoke upoufTnE Os Prominens in Birds. 



Air. W. T. Hornaday read a paper entitled Cu'ilization as 

 an Exterminator of Savage Races, which led to some re- 

 marks by Prof. Ward and Mr. Dall. 



Mr. VV. H. Dall called attention to A Genus of Bivalve Mol- 

 LUSKS New to North America. The genus is Cyre7iella.-\ 



One Hundred and Eleventh Meeting, May 14, 18S7. 



The President in the chair, and forty-two persons present. 



Prof. C. V. Riley presented some Biological Notes on 

 Southern California, suggested by a recent trip to that re- 

 gion. Remarks were made by Dr. Vasey, Dr. Merriam, Prof. 

 Stearns, and Mr. Dall. 



Mr. P. L. Jouy exhibited specimens of A Bird New to Japan, 

 Pitta oreas of Swinhoe, from the island of Tsushima. 



Mr. F. H. Knowlton made a communication on The Recent 

 Shower of Pollen in Washington, the so-called *' sulphur 

 shower." The distance which pollen may be carried by the 

 winds gave rise to remarks by Dr. Vasey, Prof. Riley, and Prof. 

 Ward. 



♦1887. Published in part in Annual Rept. Dept. of Agriculture for 1886, 

 pp. 246-250. 



t 1887. Amer. Jour. Sci., xxxiv, p. 170. 



