715 
Dr. LeConte communicated two more lists: 
1. List of Coleoptera found in the Lake Superior region, 
by H. G. Hubbard and E. A. Schwarz. 
2. Contribution to a list of the Coleoptera of the Lower 
Peninsula of Michigan, by the same. 
Dr. Horn communicated two papers: 
1. Synopsis of the Colydiide of the U.S. 
2. Revision of the species of the sub-family Bostrichide 
of the U.S. 
Prof. Frazer threw upon a screen, by means of Mr. Hol- 
man’s caleium light with microscope, magnified reflections of 
the pits in tin foil produced by the stylus of a phonograph, - 
and showed by a discussion of their shapes that different 
vowels and vowels of different time lengths had different 
and constant characteristic marks visible to the eye, that 
these marks were single, double and triple, always connected 
in the same manner and order. Even the resolution of diph- 
thongs appeared possible. His experiments were made with 
the assistance of Mr. Plush of Philadelphia, and on his 
phonograph. 
Prof. Frazer also recorded a new use of the “ Edison trans- 
mitter” for measuring amounts of pressure by means of the 
galvanometer. 
Pending nominations, Nos. 852 to 856 were read, and on 
motion the regular election of members was postponed to 
the next meeting. 
And the meeting was adjourned. 
Stated Meeting, May 3d, 1878. 
' Present 13 members. 
Vice-President, Mr. FRALEY, in the chair. 
Photographs for the Album were received from Prof. F. 
A. March, of Easton, Pa; Prof. T. M. Drown, of Easton, Pa: 
Prof. W. C. Cattell, President of Lafayette College, Easton, 
Pa. ; Prof. Thomas Conrad Porter, of Easton, Pa. ; and Presi- 
dent F. A. P. Barnard, of Columbia College, New York 
City, with a letter from the same. 
