554 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
354th Meeting. May 10, 1890. 
President Dutton in the chair. 
Thirty-four members present. 
Mr. J. Elfreth Watkins read a paper on Early Dividing 
Engines, with special reference to that constructed by Ramsden 
in 1775. 
Published in the Report of the National Museum, 1888-’89. 
Mr. W J McGee read a paper on Recent Geographic Changes 
on the Atlantic and Gulf Coasts. 
Published, under the title “ Encroachments of the Sea,” in The 
Forum, 8vo, New York, June, 1890, vol. 9, No. 4, pp. 437-449. 
355th Meeting. May 24, 1890. 
Vice-President Gilbert in the chair. 
Thirty-five members present. 
The election to membership of Dr. Frank Baker and Mr. A. 
W. Harris was announced. 
Mr. H. G. Ogden read a paper on Chart-Making. 
Not published. 
Mr. Frederick W. True read a paper entitled An Epitome of 
the Natural History of the Puma. 
Published in the Report of the National Museum, 1888—’89, 
pp. 591-608. 
356th Meeting. October 11, 1890. 
Vice-President Gilbert in the chair. 
Forty-five members and guests present. 
The Chair announced the death of Capt. C. 0. Boutelle, 
who died June 22, 1890. He announced also the election to 
