RECORDS OF MEETINGS. 739 



"Description of Bermuda Hydroids." By Edgar Davidson 

 Congdon. Presented l)y E. L. Mark. 



"The Transmission of RiJntgen Rays through ^Metallic Sheets." 

 By John Mead Adams. Presented by John Trowbridge. 



Nine hundred and sixty-ninth Meeting. 



December 12, 1906. 



The Academy met at its House. 



The PiiESiDENT in the chair. 



There were present twenty-two Fellows. 



The Corresponding Secretary read a letter from Mr. Henry 

 H. Edes, presenting to the Academy a photographic copy of 

 the certificate of Membership in the Academy, which was given 

 in 1781, to Benjamin Franklin. 



On motion of the Corresponding Secretary, it was 



Voted, That the thanks of the Academy be tendered to Mr. 

 Edes for his gift. 



The Chair announced the following deaths : — 



Samuel Cabot, Resident Fellow in Class I, Section 3 ; F. 

 Brunetiere, Foreign Honoiary Member in Class III, Sec- 

 tion 4. 



A proposition from the Council for the establishment of an 

 emeritus list of Resident Fellows was read ; this proposition, 

 requiring a change in the statutes, was referred to a committee 

 consisting of Charles P. Bowditch, A. Lawrence Rotch, William 

 Watson. 



The followinor recommendation from the Council was read 

 by the Corresponding Secretary: — 



That an appropriation of five hundred dollars (8500) be made 

 from the income of the Publication Fund, for the use of the 

 Publishing Committee for the remainder of the year. 



The following communication was given : — 



" The Surface Temperature of Mars (from a New Determina- 

 tion of the Solar Heat received by it)." By Professor Percival 

 Lowell. 



The following papers were read by title : — 



