RECORDS OF MEETINGS OF 1906 299 



Professor Kemp presented an outline of the work of the Tenth Inter- 

 national Geological Congress which was held in September in the City of 

 Mexico. The Congress was opened at eleven o'clock in the morning of 

 September 6 by President Diaz of the Republic of Mexico, and in the great 

 assembly hall of the historic School of Mines. In the afternoon the regular 

 sessions began in the fine new building of the Mexican National Geological 

 Survey. On the alternate days of the business sessions, excursions were 

 offered to points near the City of Mexico. The first great topic discussed 

 was Past Geological Climates, and occupied two days. The second related 

 to the Origin of Ore Deposits and occupied a day and a half. Subjects 

 of general interest filled the remaining days, including especially Earth- 

 quakes and Volcanoes. The speaker briefly outlined the more important 

 communications. Excursions were given to the great lava flow near the 

 city, called the Pedregal, to Cuernavaca, to Pachuca, and to the Pyramids 

 of San Juan Teotihuacan. In the evenings banquets v\'ere tendered by 

 various officials, of which the chief was by President Diaz at Chapultepec. 



Dr. Hovey spoke briefly of the excursions to some of the volcanoes in 

 the southern part of the Republic and of the trip across the Isthmus of 

 Tehuantepec. 



The Section then adjourned. 



A. W. Grabau, 



Secretary. 



SECTION OF ASTRONOMY, PHYSICS AND CHEMISTRY. 



November 19, 1906. 



The Section met at 8: 15 P. M. at the American Museum of Natural 

 History, Vice-President Trowbridge presiding. 



The minutes of the previous meeting were omitted on account of the 

 absence of the Secretary. 



A public lecture was then delivered by Professor Charles Lane Poor, 

 entitled "The Proposed New Astronomical Observatory and Nauti- 

 cal Museum for New York City." 



The lecture was illustrated with stereopticon views. 



Roy W. Miner, 

 Secretary pro tern. 



