1 8 FINAL ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 



SECTION II. 

 ASTRONOMY, METEOROLOGY,, AND SEISMOLOGY. 



ASTRONOMY. 



Status of astronomical work at the principal observatories of South 

 America; astronomical work at Lick Observatory and at Mount 

 Wilson Solar Observatory; project for determining the flattening 

 of the earth's surface by simultaneous observations of the moon 

 from stations in North and South America. 



GEODESY. 



Project for the extension of an international net of primary triangula- 

 tion covering all the countries from Patagonia to Alaska, including 

 azimuth, latitude, longitude and gravimetric determination over 

 the entire continent; detailed figures showing the costs in recent 

 geodetic experience, of the fieldwork essential to the preceding 

 project; present status of magnetic surveys in South America and 

 the need especially of additional observatories there for determin- 

 ing the secular variations of the magnetic elements. 



METEOROLOGY. 



Meteorological data and ways and means of recording and using them; 

 climatology and the application of available knowledge to agri- 

 culture, navigation and conservation of crop and forest resources; 

 weather forecasts and desirability of additional international 

 observations on which world weather maps may be based ; secular 

 meteorology, involving climatic changes, migrations of popula- 

 tions, alternations of arid and humid conditions over the same 

 area, etc.; atmospheric electricity, solar radiation, cyclonic and 

 magnetic storms. 



SEISMOLOGY. 



Physical bases of modern seismology and methods of observing and 

 recording data; present status of the science and needs for fur- 

 ther advances; organization and development of seismological 

 services in various countries: 



