436 ANNALS NEW YORK ACADEMY OF SCIENCES 



The following programme was then offered: 



J. F. Kemp, The Eleventh International Geological Congress 



AT Stockholm, July and August, 1910. 

 J. J. Stevenson, The Coal Basin of Decazeville, France. 

 £. 0. Hovey, Some Observations on the Yosemite Valley. 



Summary of Paper. 



Professor Kemp gave an account of the several excursions preceding 

 the Congress, and a summary of the topics and papers presented at the 

 regular sessions was read. The chief feature of the Eleventh Congress 

 was the preparation of a series of monographs on the iron ore reserves of 

 the world. Professor Kemp is the author of those on the iron reserves of 

 the United States, the Philippines, Central America, the West Indies 

 and several of the South American countries. Many of the features of 

 special interest in Sweden and Norway were described, and several lan- 

 tern views were shown in illustration. 



Professor Stevenson gave an instructive account and discussion of the 

 structure and origin of the coals of Decazeville. It is his opinion that 

 they have been formed by peat bog growth instead of transported vegeta- 

 tion, as the French geologists have held. 



Dr. Hovey 's description was based upon a trip made during the sum- 

 mer. A magnificent set of lantern views was shown to illustrate the 

 different features. 



The Section then adjourned. 



Charles P. Berkey, 



Secretary. 



SECTION" OF BIOLOGY. 

 November 14, 1910. 



Section met at 8 :15 p. m., Dr. Alexander Petrunkevitch presiding. 

 The minutes of the last meeting of the Section were read and approved. 

 The following programme was then offered : 



Raymond C. Osburn, The Effects of Exposure on the Gill 



Filaments of Fishes. 

 Alexander Petrunkevitch, Courtship in Tarantulas. 

 W. M. Wheeler, The North American Ants of the Genus 



Camponotus mayr. 



