Natural Sciences of Philadelphia 
77 
Publications 
P UBLICA TION COMMITTEE 
Henry A. Pilsbry, Chairman , Witmer Stone, 
William J. Fox, Milton J. Greenman, J. Percy Moore. 
Editor: William J. Fox. 
Artist: Helen Winchester. 
Owing to a change in the issue of the Proceedings, from three 
parts eacli year to a single volume, which cannot be issued until 
after January i, 1923, nothing has been distributed of this pub¬ 
lication, except the reprints of the separate papers which are sent 
out to obtain a date of issue. The volume when completed will 
contain approximately 310 pages and twenty-two plates. 
The Annual Reports for 1921, have been issued and distributed 
to members. They consisted of seventy-four pages and sixteen 
half-tone illustrations. 
Of the Entomological News, published by the Entomological 
Section of the Academy, 333 pages and 11 plates were issued; and 
the American Entomological Society published 355 pages and 18 
plates of its Transactions. 
Parts 104 and 105 of the Manual of Conchology, with 142 
pages and 11 plates, have been issued under the editorship of Dr. 
Pilsbry. 
The Academy has published “The Mineralogy of Pennsylvania,” 
by Samuel G. Gordon, a volume of 160 pages and no text illus¬ 
trations, and a frontispiece. This volume forms the initial number 
of a new series entitled Special Publication. 
Exchange of publications, interrupted during the world war, 
has been resumed with correspondents in Roumania, Servia, and 
Ukrainia; and through the intermediary of the American Relief 
Administration it was possible to forward to correspondents in 
Russia, all the publications withheld during the war period. 
William J. Fox, 
Secretary of the Committee. 
