RECORDS OF MEETINGS. 729 



Treasurer, and referred to a committee consisting of W. H. 

 Pickering, J. E. Wolff, and the Recording Secretary. 



The President announced the appointment of Professor W. 

 G. Fallow as representative of the Academy at the Darwin 

 celebration of the University of Cambridge. 



The following communications were given : — 



Biographical notice of Dr. Charles Follen Folsom. By Dr. 

 James J. Putnam. 



" Location of a Hypothetical Planet beyond Neptune." By 

 Professor W. H. Pickering. 



The following papers were read by title : — 



" The Preface of Vitruvius." By M. H. Morgan. 



" The Theory of Ballistic Galvanometers of Long Period." 

 By B. O. Peirce. 



" The Magnetic Behavior of Hardened Cast Iron and Tool 

 Steel at very High Excitations." By B. O. Peirce. 



" The Use of the Magnetic Yoke in Measurements of the 

 Permeabilities of Iron and Steel Rods in Intense Fields." By 

 B. O. Peirce. 



" A Study of Residual Charge in Dielectries." By C. L. B. 

 Shuddemagen. Presented by E. H. Hall. 



Nine hundred eighty-fifth Meeting. 



December 9, 1908. 



The President in the chair. 



There were thirty-one Fellows and one guest present. 



The Corresponding Secretary read a notice of a prize to be 

 given in 1910, by the Academie des Sciences et Lettres of 

 Montpellier, to the author of the best work on the subject of 

 General Pathology and Therapeutics. He also read the resigna- 

 tion of C. H. Toy, to take effect in May, 1909. 



The following deaths were announced by the Chair: — 



John H. Wright, Resident Fellow in Class III, Section 2; 

 Gaston Boissier, Foreign Honorary Member in Class III, 

 Section 4. 



Professor George F. Moore read a paper entitled : — 



" The Jewish Colony at Elephantine : Recently discovered 

 Papyri." 



