166 Association of American Geologists and Naturalists. 



liferous ores found by himself in the State of New York, together 

 with some observations in regard to the fissures in rocks. 



Association adjourned to Wednesday, 9 o'clock, A. M. 



In the evening Prof. Silliman delivered a most interesting ad- 

 dress on the " Progress of Geological Science in this country," 

 to the Association, in presence of the public, who had been invi- 

 ted to attend. 



Wednesday, April 'ilth, 9 o'clock, A. M. — Association met pur- 

 suant to adjournment. Dr. Morton in the chair. A letter was 

 read by the secretary from Mr. Richard C. Taylor. 



The constitution, as reported by the committee on the consti- 

 tution and by-laws, was then read by the secretary. Articles I, 

 III, and IV, were carried with amendments ; the other articles 

 were carried as reported.* 



Resolved, That an additional article be prepared by the com- 

 mittee, providing for the future alteration or amendment of the 

 constitution and by-laws. 



Resolved, That Prof. Silliman be requested to publish his ad- 

 dress before this Association in the American Journal of Science 

 as one of its articles.! 



After some remarks on the subject of drift. Prof Emmons of- 

 fered the following resolution on ihe subject of drift, which was 

 carried. 



Resolved, That the subject of drift in our country receive still 

 farther examination from the committee, and that a farther report 

 be made at the next meeting of the Association. Objections to 

 the views presented and as it has been treated by geologists in 

 general are, that many phenomena are confounded together : as, 

 1st, the washing up of ridges along the shores of lakes ; 2d, those 

 of glaciers ; 3d, of icebergs ; 4th, alluvial beds ; 5th, the accumu- 

 lation of bowlders along what were ancient coasts ; and 6th and 

 7th, pot holes and slickensides. Icebergs do not necessarily act 

 upon rocks when borne along, inasmuch as they are supposed to 

 be defended by soft materials, as gravel, sand, and mud ; and 

 that they explain merely the distribution of bowlders, and their 

 peculiar movements when grounded are not likely to form paral- 

 lel grooves or scratches. The theory of an hemisphere of ice 



* The Constitution will be found under Tuesday's proceedings. 



t Tliis address will form the leadin" article in our nest number, — Eds. 



