334 PROCEEDINGS OF THE AMERICAN ACADEMY 



The Corresponding Secretary announced the decease of 

 members since the 29th of May, 1890, as follows : — 



Henry Jacob Bigelow, Charles Otis Boutelle, and William 

 Prescott Dexter, Resident Fellows ; George Bancroft, John 

 Charles Fremont, and Christian Henry Frederick Peters, 

 Associate Fellows. 



The following correspondence was presented : a letter 

 from the President of the Royal Academy of Sciences of 

 Belgium, announcing the death of its Permanent Secretary, 

 Jean Baptiste Joseph Liagre ; and a circular from the Com- 

 mittee of Organization of the Fifth International Congress of 

 Geologists, inviting the members of the Academy to attend 

 the meeting of the Congress in Washington in August next. 



Professor Henry P. Bowditch brought to the attention of 

 the Academy a circular, signed by numerous men of science, 

 soliciting subscriptions for a marble bust and medal in 

 commemoration of the seventieth birthday of Hermann von 

 Helmholtz. 



Professor Farlow presented, by title, a paper by W. Albert 

 Setchell, entitled, " Preliminary Notes on the Species of 

 Doassansia, Cornu." 



Professor Dolbear gave an account of his researches to 

 discover evidence of momentum from electrical action. 



Dr. William Everett spoke at length upon the deficiencies 

 of elmentary text-books in secondary schools. 



Eight hundred and forty-first Meeting:. 



April 8, 1891. — Monthly Meeting. 



The Academy met at the Harvard Medical School, Boston. 



The President in the chair. 



The following papers were presented : — 



Demonstration of Electrical, Optical, and Mechanical 

 Apparatus for Instruction and Research. By Henry P. 

 Bowditch. 



On the Means of teaching Anatomy, illustrated by new 

 Models and Specimens. By Thomas Dwight. 



