OF ARTS AND SCIENCES. 329 



The following papers were presented by title : — 



Notes on Fungi. By William G. Farlow. 



Concerning the Life-History of Saccorhiza dermatodea (De 

 la Pyl.) J. Ag. By William A. Setchell. 



A Revision of the Atomic Weight of Copper. Fourth 

 Paper. By Theodore W. Richards. 



On some Considerations regarding Helmholtz's Theory of 

 Consonance. By Charles R. Cross and Harry M. Goodwin. 



On the Minimum Number of Vibrations necessary to deter- 

 mine Pitch. By Charles R. Cross and Margaret E. Maltby. 



Eight hundred and forty-fifth Meeting. 



October 14, 1891. — Stated Meeting. 



The President in the chair. 



The following letters were read by the Corresponding 

 Secretary : from Louis Cabot, accepting Fellowship in the 

 Academy ; from the Tacoma Academy of Science, announcing 

 its formation, and asking for the publications of the American 

 Academy ; from the Royal Academy of Sciences of Lisbon, 

 announcing the death of its Secretary, Jose* Maria Latino 

 Coelho ; from George Walter Hael, claiming that the clefts 

 found upon the earth and the moon are due to the action of 

 meteors; from the friends of Wilhelm Weber, announcing 

 his death ; from Eduard Marchal, announcing his election 

 as Permanent Secretary of the Royal Academy of Belgium ; 

 from J. Veniezra, announcing his appointment as Director of 

 the Marine Observatory of San Fernando; from the Royal 

 Society of New South Wales, enclosing a programme of sub- 

 jects for medals and money prizes to be obtained by compe- 

 tition ; and from W. K. Warren, executor of the estate of 

 Cyrus M. Warren, Fellow of the Academy, announcing a 

 bequest to the Academy. 



On motion of the Treasurer, the following vote was 

 passed. 



Whereas, The will of our late honored Associate, Cyrus M. 

 Warren, contains the following provisions : — 



