292 PROCEEDINGS OF THE AMERICAN ACADEMY 



The following papers were presented : — 



On the Matrical Equation 12 <£ = </> fl'. By Henry Taber. 



On the so called Hall Effect in several Metals at widely 

 varying Temperatures. By A. L. Clough and E. H. Hall. 



On the Thermal Conductivity of Cast Iron and of Cast 

 Nickel. By E. H. Hall. 



A letter was read from the General Committee of the 

 World's Congress Auxiliary on Mathematics and Astronomy, 

 calling the attention of the Academy to its printed prelimi- 

 nary address. 



Eight hundred and fifty-third Meeting. 



October 12, 1892. — Stated Meeting. 



The President in the chair. 



In the absence of the Recording Secretary, Major W. R. 

 Livermore was elected Secretary pro tempore. 



The Corresponding Secretary read letters from Messrs. J. 

 Bartlett, Bennett, Bowditch, Chamberlain, Higginson, Hudson, 

 Lowell, Moore, Robinson, and Smith, accepting Fellowship ; 

 from Messrs. Barnard, Comstock, Keeler, McClintock, Pyn- 

 chon, Selwyn, Trelease, and Vasey, acknowledging election 

 as Associate Fellows ; and from Messrs Gylden, Huggins, 

 Sorby, Strasburger, and Vogel, acknowledging election as 

 Foreign Honorary Members. 



The President announced the decease of James Bicheno 

 Francis and John Greenleaf Whittier, Fellows ; and of Sir 

 William Bowman and Lord Tennyson, Foreign Honorary 

 Members. 



On motion, it was 



Voted, To meet on adjournment on the second Wednesday 

 in November. 



The following papers were presented: — 



On Turmerol. By Charles L. Jackson. 



On Alaska. By Josiah P. Cooke. 



