246 TEANSACTIONS OF SCIENTIFIC SECTION. 



Water Commissioners and the Anderson Co., for the ad- 

 dition of this purifier to the filter plant, but mechanical 

 difficulties and unavoidable delays have, up to the 

 present, prevented the completion of the work. The suc- 

 cessful operation of this system in such cities of the Old 

 World as Antwerp, Dordrecht, etc., encourages us to be- 

 lieve that when the work is perfected here, Poughkeep- 

 sie may boast of a supply of water unsurpassed in any 

 other city in the United States. 



The paper was discussed by Members Van Gieson, 

 Elting, Ward, Sutcliffe, and C. N. Arnold. 



FEBRUARY 28, 1893— FIFTH REGULAR MEETING. 



Present Chairman Burgess, and 30 members and 

 visitors. 



A paper was presented by Mr. John Sutcliffe on 

 " Mining." 



Mr. Sutcliffe described mining for slates in Vermont 

 and for silver in Mexico, pointed out the necessity of 

 conducting mining operations on strictly business prin- 

 ciples, and gave a great variety of very interesting facts 

 from his own personal experience. He illustrated the 

 lecture by drawings and specimens. 



MARCH 28, 1893— SIXTH REGULAR MEETING. 



Present Chairman Burgess, and 30 members and 

 visitors. 



The curator's and librarian's reports were read and 

 approved. 



A paper was read by Mr. John A. Williams, as 

 follows : 



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