Natural Sciences of Philadelphia 
57 
Public Lectures. 
The free public lectures given at the Academy under the auspices 
of the Ludwick Institute, were continued in the 1921 season. Six- 
teen evening lectures were given with a very gratifying attendance 
at each. The Lecture Committee was fortunate in obtaining 
prominent naturalists from other institutions who presented im- 
pressions of their field work and studies in various parts of the world. 
Among these were, Mr. Herbert Lang, Assistant Curator, Dept, of 
Mammalogy, American Museum of Natural History, N. Y., who 
spoke on “Big Game and Peoples of the Belgian Congo.” Dr. 
Robert C. Murphy, Museums of the Brooklyn Institute of Arts and 
Science, who told about “The Penguins of South Georgia Island.” 
“Six Years of an Ornithologist in the Belgian Congo,” given by 
James P. Chapin, of the Dept, of Ornithology, American Museum 
of Natural History, and the last lecture of the Evening Course 
was given by Dr. J. Chester Bradley, Professor of Entomology, 
Cornell University, “An Entomologist’s Journey through Junin 
and Loreto Provinces of Peru.” Lectures by the resident 
staff were interspersed among the out of town speakers. A series 
of twelve Friday afternoon lectures were given by members of the 
resident staff, for school children. These were primarily of the 
local fauna and flora and more or less elementary in character. 
Information was sent to the principals of the public and private 
schools in and near Philadelphia, by means of letter and the local 
newspapers. Many of the schools availed themselves of these 
lectures which would seem to warrant their repetition next year. 
Three lectures were given on consecutive Sunday afternoons, as 
an experiment, in February: February 6th, Dr. Witmer Stone, 
“A Naturalist in Arizona” ; February 13th, Dr. Henry A. Pilsbry, 
“The Hawaiian Islands and the Volcano of Kilauea” ; and February 
20th, James A. G. Rehn, “Deserts and Mountains of California 
and Nevada.” These lectures were very well attended and seemed 
to reach a new class of people, who had not been in touch with the 
work of the Academy before. Many regrets were expressed that 
this Sunday course was only for three Sundays. The attendance 
was so gratifying that the Academy and the Ludwick Institute 
would seem justified in continuing and extending these Sunday 
talks next year. 
