Chase.] 4^Q [October. 



If density is a functional product of superficial magnetism and 

 central attraction, tbe resemblance of the formula B = v^ AM, to the 

 expression of Mr. Graham's experimental law of molecular diffusion, 



Time = F v^ Density (Proc. Roy. Soc. No. 56, p. 616-7), and to the 

 general theoretical formula of which Mr. Graham's is a corollary, 



Velocity = F ^/ Elasticity 

 Density. 



may be something more than accidental. 



If we assume the atmospheric density as our unit, D' ^ 1, and 

 represent the aerial and gethereal elasticities by E', E", respectively, 

 the proportion 



1 : 192,000 : : ^/^ : ^/^ 

 gives an approximate value for the density of the kinetic aether, 

 D" = .00000000000108 I,. The magnetic and barometric fluctua- 

 tions may perhaps furnish the necessary data for determining the un- 

 known ratio =717. 



Mr. Marsh exhibited a Manuscript Chart, and read a letter 

 from Mr. R. P. Gregg, of Manchester, England, in reference 

 to the recent observations of Messrs. Gregg and Herschel, 

 upon the radiant points of Star Showers. 



Pending nominations Nos. 525, 526, 527, 528, were read 

 and balloted for. 



On motion of the Librarian, wuth the approval of the Com- 

 mittee on the Library, the sum of seventy dollars and ten 

 cents ($70 10), was appropriated to pay Messrs. Pawson and 

 Nicholson's bill of 14th inst., for the binding of books. 



There being no other business, the ballot boxes were ex- 

 amined by the presiding officer, and the following persons 

 were declared duly elected members of the Society : 



Rev. Prof. T. C. Porter, of Lancaster, Pa. 



Rev. John Bost, of Laforce, near Bergerac, France. 



Rev. Prof. C. P. Krauth, of Philadelphia. 



Mr. R. H. Lamborn, of Altoona, Blair County, Pa. 

 And the Society was adjourned. 



