AMERICAN GEOLOGISTS AND NATURALISTS. 61 



ton) on this subject, between Prof. Locke, IVIr. Nicollet, Dr. 

 Kl\g, Mr. Haldeman, Prof. Silllman, Prof. Hitchcock, and Prof. 

 Bailey. Mr, Nicollet related several observations relative to the 

 manners and customs of the Indians, made during a long resi- 

 dence in their country, having a bearing on the construction and 

 age of these mounds. 



Resolved, That a committee be appointed to examine and re- 

 port on the subject of western mounds. The following gentle- 

 men were appointed on this committee. 



Prof. Locke, Mr. Nicollet, Mr. John H. Blake, Dr. Engel- 

 MAN, Mr. S. P. Hildreth, Prof. Troost, and Dr. B. B. Brown. 



Adjourned to Thursday at 9, a. m., the afternoon being appro- 

 priated to the hearing of an address before the Boston Society of 

 Natural History, by the chairman of this Association. 



Thursday, April 2Sth, 9 o'clock, a. m. — The Association met 

 according to adjournment, Prof. Silliman in the chair. Proceed- 

 ings of the former meetings were read and accepted. 



Resolved, That Mr. John L. Hayes be added to the commit- 

 tee on the subject of icebergs, and that he be requested to prepare 

 a separate report. 



The committee appointed reported an article relative to amend- 

 ments of the constitution, which was adopted as a part of the 

 constitution. 



Resolved, That on Friday at 9, a. m. the Association proceed 

 to the choice of officers for the next annual meeting, and also to 

 fix upon a place for the same. 



Prof. Locke read a paper describing a new instrument invented 

 by himself, and which he called a Reflecting- Level and Goni- 

 ometer. He described a reflecting compass of his invention, and 

 read a paper " on a Prostrate Forest under the Diluvium of Ohio." 



Prof, Hall made some remarks on the wood found underneath 

 the drift in Washington. 



Prof. Hubbard offered some remarks on the drift of New Hamp- 

 shire, exhibiting a remarkable specimen of a bowlder of smoky 

 quartz containing acicular crystals of rutile. 



Resolved, That Prof. Hubbard be added to the committee on 

 drift. 



Dr. C. T. Jackson read a paper " on the Tin Veins of New 

 Hampshire," and exhibited specimens of the ore, both crystallized 

 and compact, and an ingot of the reduced metal weighing three 

 ounces, obtained from five ounces of the ore ; also the accompa- 

 nying minerals of the vein at Jackson, and specimens of the yel- 



