12 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1919. 
youth, and matui'e men and women. It would stinmlate the historian, artist, 
designer, manufacturer, and artisan, and bring to the American people in 
the most realistic manner the extent and character of their historical and in- 
dustrial development, and place side by side with the American many of the 
developments in art and science of other lands. I can not conceive of a more 
powerful influeiice for good that could take the form of a memorial to 
Roosevelt. 
We have the great monument to Washington, the great mausoleum to Lincoln, 
and if on the same great parkway between the Capitol and the Potomac this 
tribute to Roosevelt could be erected It would be a tribute worthy of what he 
himself stood for in the life and thought of our country. 
The bill providing for this memorial to Theodore Eoosevelt was 
not brought up before the Congress for action during the session, 
at which it was introduced, but it was reintroduced on May 21, 1919, 
during the first session of the Sixty-sixth Congress, and at the close 
of the fiscal year was still in committee. 
RESEARCH CORPORATION. 
The Eesearch Corporation, mentioned in several previous reports, 
is the outgrowth of the gift to the Smithsonian Institution by Dr. 
F. G. Cottrell of his patents covering the electrical precipitation of 
suspended particles. 
The process is now in successful operation in a number of smelting 
and refining plants in which the precipitation of fumes is an impor- 
tant item. From the income of these applications there was estab- 
lished a fellowsliip, amounting to $2,500 each year, for research 
along technical lines. 
POPULAR SCIENTIFIC LECTURES. 
In furthering one of the purposes of the Institution, "the diffu- 
sion of knowledge," a series of popular scientific lectures, illustrated 
by lantern slides, was instituted during the year, and given in the 
auditorium of the National History Building of the Museum. These 
lectures were open to the public and were all well attended, showing 
the interest of the people of Washington in scientific matters. Eight 
lectures were given in the series, on alternate Saturday afternoons, 
as follows: 
1. Photographing in the Canadian Rockies, by Charles D. Walcott. 
2. Sun Rays in Many Lands, by C. G. Abbot. 
3. The Indian as a Stone Mason, by J. Walter Fewkes. 
4. Meteorites and Shooting Stars, by George P. Merrill. 
5. The Story of Our Local Aborigines, Historic and Prehistoric, With Demon- 
strations of Their Instrument Making, by William H. Holmes. 
6. Harmful and Beneficial Insects, and How the National Museum Helps in 
Their Study, by L. O. Howard. 
7. The Story of Silk, by Frederick L. Lewton. 
8. Why the Wild Flowers Are So Wild, by Frederick V. Coville. 
It is intended to continue these lectures during the coming year. 
