152 Litelligence and Miscellaneous Articles. 



CAMBRIDGE PHILOSOPHICAL SOCIETY. 

 Nov. 5. — The anniversary meeting of this societj' was lield on 

 Monday evening last, the Rev. Dr. Graham, the President, being in 

 the chair. The Treasurer's report was read, and the audit confirmed; 

 and the following officers were elected for the ensuing year : 



Dr. Graham, President, (re-elected.) 



Mr. Hopkins (re-elected), ~j 



Dr. Clarke, > Vice-Presidents. 



Prof. Gumming, J 



Prof. Peacock, Treasurer. 



Prof. Henslow, ~j 



Prof. WheweU, > Secretaries. 



Prof. Willis, J 



Rev. J.Power, '] _. Dr. Bond, 



'o 



Prof. Miller, | ^ ^ Dr. Paget, 



^ o 



o 



Prof. Challis, >-g § Mr. Stokes, 



Rev. J. W. Barnes, j o Mr. Earnshaw, 

 Prof. Sedgwick, J Mr. Garnons, J 



Nov. 12. — Mr. Hopkins, one of the Vice-Presidents, in the chair. 

 Professor Whewell made a communication " respecting certain kinds 

 of Architecture." 



Nov. 26. — Dr. Graham, the President, in the chair. A paper was 

 read by Mr. D. T. Gregory, of Trinity College, " On the Logarithms 

 of Negative Quantities " : and a communication was made by Pro- 

 fessor Henslow on the formation of mineral veins, as illustrated by 

 a specimen of" brown clay" from Suffolk. 



Dec. 10. — Dr. Graham, the President, in the chair. A communi- 

 cation, by Mr. Holditch, of Caius College, was laid before the So- 

 ciety, " On rolling curves." Professor Willis, who stated the re- 

 sults at which Mr. Holditch had arrived, illustrated the subject by 

 models of revolving wheels of various foi'ms, working in each other 

 by rolling contact. These forms may consist of one, two, three, 

 four, or more lobes : the form which consists of one lobe, may be 

 an ellipse turning about its focus. A note on the Flora of Madeira, 

 by Mr. Lowe, in addition to his Memoir, published in the last Part 

 of the Society, was read ; also the beginning of a paper by Mr. 

 Rothman, " On the climate of Italy." Prof. Henslow also gave an 

 account of the structure of wasps' nests. 



XXVI. Intelligence and Miscellaneous Articles. 



EQUIVALENT OF CARBON AND COMPOSITION OF NAPHTHALIN. 



MM. Theard, Robiquet, and Dumas, in reporting upon the me- 

 moir of MM. Pelletier and Walter, having occasion to allude to 

 the composition of naphthalin, state that one of them some years since 

 analysed a very pure specimen of this substance, and found that 

 0-400 of it yielded r370 of carbonic acid and 0'222 of water; this 

 representing ^^^-^^^ g^.^g 



Hydrogen 6*16 



.. 100-92 



