PHILOSOPHICAL SOCIETY OF WASHINGTON. 89 



and Comberousse's Traite de geometrie elementaire, (2d ed., p. 113, 

 Ex. 124,) a source from which Prof. Chauvenet drew many of his 

 exercises. In Chauvenet's Geometry this problem appears as Exer- 

 cise 110, page 308, with the statement that there are in general four 

 solutions. This statement does not occur in the French work cited, 

 and, therefore, the error appears to be due to Chauvenet himself, a 

 thing somewhat noteworthy, as Chauvenet's works are in general 

 very accurate. 



Mr. Alvord then remarked 



ON SOME OF THE PROPERTIES OF STEINER's " POWER-CIRCLE." 



After the consideration of this communication the report of the 

 Auditing Committee, appointed at the 208th meeting, was called 

 for, and, in the absence of the chairman, Mr. Knox, was presented 

 by Mr. Fletcher. The following is the report : 



Washington, January 13, 1882. 

 Mr. President and Gentlemen 



of the Philosophical Society of Washington : 

 We, your committee, appointed at the annual meeting, December 

 17th, 1881, to audit the report of the Treasurer for the years 1880 

 and 1881, have the honor to submit the following report: 



We have examined the statement of receipts of dues from mem- 

 bers and of interest on bonds, and find the former to be $1,175 and 

 the latter $125, as appears in the Treasurer's statements of accounts 

 for the years 1880 and 1881. 



We have examined the vouchers for disbursements for the same 

 period, and find them correct. 



We haVe compared the return checks with the vouchers and with 

 the entries in the bank book, and find them correct. 



We have examined the bauk book, and found the balance as set 

 forth to be correct, said balance, deducting the amount of two 

 checks not yet returned, being $320.16, with Messrs. Puggs & Co. 



The bonds referred to in the statements of assets were exhibited 

 to us by the Treasurer, and consist of $1,000 U. S. 4£s and $500 4 

 per cent, bonds. 



All of which is respectfully submitted. 



Jno. Jay Knox. 

 Robert Fletcher. 

 G. K. Gilbert. 



