1919.] 
NATURAL SCIENCES OF PHILADELPHIA. 
301 
Memoirs, and three-hundred and four pages and eleven plates of 
the Entomological News. 
Of the Manual of Conchology, parts 98 and 99, of volume 25, 
second series, comprising one-hundred and eighty pages and eighteea 
colored plates, have been issued by Dr. Pilsbry, Curator of Molluscn. 
Seven members have been elected during the year, and the deaths 
of eleven have been announced. Three members have resigned. 
The Ludwick Institute Free Lecture Courses were delivered at the 
Academy, in the evening on Mondays, January 7, to April 22 inch, 
and in the mornings during the spring at the several High Schools, 
by Witmer Stone, Henry W. Fowler, James A. G. Rehn, Spencer 
Trotter, Henry A. Pilsbry, J. Percy Moore, and J. Fletcher Street. 
All lectures were illustrated by lantern slides. 
The Delaware Valley Ornithological Club and the Philadelphia 
Botanical Club have continued their meetings in the Academy; and 
meetings of the Women Teachers’ Association of Philadelphia, and 
The State Graduate Nurses’ Association, were held in the Lecture 
Hall. 
Edw. J. Nolan, Recording Secretary. 
REPORT OF THE CORRESPONDING SECRETARY. 
Deaths of the following named correspondents were announced 
during the year. Raphael Blanchard, Frederick DuCane Godman, 
William J. Far low, Gustav Retzius, and Ernst Haeckel. No corres¬ 
pondents were elected. 
A slight increase in the volume of foreign correspondence reflects 
the renewal of scientific activities since the cessation of hostilities, 
but most of the antebellum agencies for effecting scientific coopera¬ 
tion remain disorganized. 
There have been no international congresses to which the Academy 
was invited. An invitation from the Academy of Literature, Sci¬ 
ences, Arts and Agriculture of Metz to participate in the celebration 
of its reestablishment after forty-nine years of suppression by the 
German conquerers was received and answered by a congratulatory 
letter. 
A copy of a resolution thanking theAcademy for courtesies extended 
during its convention in Philadelphia was received from the American 
Association of Museums. In connection with the removal of the 
offices and exhibits of the Pennsylvania Department of Health a 
letter expressive of appreciation of favors rendered by the Academy 
was received from the new Commissioner of Health. 
