3 
barrier of distance by furnishing teachers, naturalists, and lecturers, with 
lantern slides, motion pictures, and information on anthropological and 
natural history topics. 
The National Museum has an excellent collection of photographs, 
chiefly of anthropological and biological interest, taken during the course 
of field work over a period of many years. Many requests are received 
for photographs of Indians and Eskimos, and of their modes of life, for use 
in illustrating articles and books. Prints are supplied at cost, and the 
National Museum receives considerable publicity through the acknow- 
ledgment of the source of the photographs when they are published. 
A fine collection of photographs of birds and bird habitats has been 
assembled. Lantern slides have been made of many of these photographs 
and are lent to teachers and other responsible persons, but only a small 
part of the requests for these slides can be granted because sufficient dupli- 
cate sets are not available. It is considered that the Museum has a national 
duty to perform in arousing widespread interest in bird conservation and, 
as one of the best means of accomplishing this is by illustrated lectures, it 
is desirable to have a large collection of good lantern slides available for 
loan to experienced lecturers. 
Motion pictures have been taken by Museum officials duriug the 
course of field work, chiefly to supplement other results of field work, and 
the following films have been assembled for loan to other museums, to 
schools, churches, clubs, etc.: The Conquest of Mount Logan; Hunting 
Dinosaurs in the Badlands of Alberta; A City Garden and Its Birds; In 
Canada’s Fjords; The Bella Coola Indians of British Columbia; The 
Carrier Indians of British Columbia; The Tsimshian Indians of British 
Columbia; The Coast Salish Indians of British Columbia; the Kootenay 
Indians of British Columbia; A Naturalist in the Arctic. 
The following motion picture films were acquired during the year from 
the R. K. 0. Pathe Distributing Corporation by long term lease: Volcanoes; 
Glaciers; Scuplture of the Land by Rivers; Shore Lines and Shore Develop- 
ments; The Work of Underground Water; and The Cycle of Erosion. 
An automatic balopticon was purchased during the year and installed 
in the rotunda of the Museum. Sets of lantern slides of subjects relating 
to the work of the National Museum and the Geological Survey have been 
prepared and are used in this machine, the sets being changed at regular 
intervals. 
An important phase of the educational work of the National Museum 
is the series of lectures given each winter. A statement concerning those 
delivered during the winter of 1930-31 is given elsewhere in this volume. 
MUSEUM LECTURES 
M. E. Wilson, of the Museum Lectures Committee, has prepared the 
following statement: 
The National Museum of Canada is an educational institution and as 
such one of its tasks is to disseminate information regarding natural 
history and other branches of science, and thus to arouse public interest in, 
and gain public support for, the various scientific activities of the Govern- 
ment Departments and the conservation and economical development of 
Canadian natural resources. With this objective in view the National 
