4 
The lecture hall was then equipped with a projection lantern and a moving 
picture projector, and lectures have been held here since 1920. The state- 
ment given elsewhere of attendance at the Saturday morning lectures is an 
indication of the appreciation in which they are held by the children of 
Ottawa. 
Educational work of popular and semi-scientific character outside of 
Ottawa has not been neglected, and efforts are being made to extend it. 
Lantern slides illustrating a variety of topics are loaned to lecturers and 
teachers. The number of slides for this purpose is added to frequently, 
and new subjects are dealt with. 
Use is made also of the moving picture for carrying on educational 
work throughout the country. A library of films is gradually being ac- 
quired. A number of films are purchased, but the exposures for several 
have been made by members of our own staff. Special mention should be 
made of pictures of Indians in western Canada. They illustrate the cus- 
toms, the ceremonials, the home life, the industries, and the art of the 
Indians. They depict the intimate lives of the people in such a way that 
they can be obtained only by one who through fair treatment and a sym- 
pathetic understanding of the Indians’ character can win their confidence 
and enlist their support. The films are thus of value not only for educa- 
tional purposes of a popular character but also as scientific records. 
Permission is given to members of the Museum staff to accede to the 
requests of various organizations for the delivery of lectures on subjects 
on which such members are specially qualified to speak, and as the mem- 
bers of the staff are engaged during the summer months in field work 
broadly distributed throughout Canada, these lectures reach a widespread 
public. For instance, C. M. Barbeau has lectured on ethnological subjects 
to students in the University of British Columbia, and on art, folk-lore, 
and folk-songs to organizations in eastern Canada; C. M. Sternberg 
delivers each year a lecture on dinosaurs to such organizations as Rotary 
clubs and Kiwanis clubs; and Clyde L. Patch has by his lectures on reptiles 
and amphibians stirred up a remarkable interest in these forms of life. 
Assistance is given to local museums, particularly in suggestions as 
how to display to the best advantage the material in their collections with 
the limited means at their disposal. Assistance is also rendered by offering 
exhibition material in exchange. The Anthropological Division has taken 
advantage of a desire on the part of the Canadian National railways to 
exhibit Indian material in the larger cities of Canada and the United 
States, and several good collections have been displayed. A very fine 
collection of anthropological material, some of it irreplaceable, has been 
loaned to the Imperial Institute for exhibition in London. Exhibitions 
illustrating the work of the whole Department of Mines, of which the 
National Museum is a branch, have been made at annual meetings of the 
Canadian Institute of Mining and Metallurgy, and several small collections 
of minerals have been displayed by Canadian Trade Commissioners in 
foreign countries. 
Three sets of economic minerals, rock-forming minerals, and rocks 
are prepared for sale to educational institutions. One set is prepared for 
use in the teaching of physiography in secondary schools, one is for use in 
