REPORT OF THE SECRETARY. 99 
VOLUME 69. 
No. 2. The Mosses Collected by the Smithsonian African Expedition, 1909-10. 
By H. N. Dixon. October 8, 1918. 380 pp. (Publ. 2494.) 
No. 4. Early Mesozoic Physiography of the Southern Rocky Mountains. By 
Willis T. Lee. July, 1918. 50 pp. (Publ. 2497.) 
No. 8. Uganda Mosses Collected by R. Ditimmer and others. By H. N. 
Dixon. Oct. 21, 1918. 11 pp. (Publ. 2522.) 
No. 9. The Smithsonian Eclipse Expedition of June 8, 1918. By L. B. Ald- 
rich. March 5, 1919. 22 pp. (Publ. 2527.) 
No. 10. The Reflecting Power of Clouds. By L. B. Aldrich. February 10, 
1919. 9 pp. (Publ. 2530.) 
No. 11. The Races of Russia. By AleS Hrdli¢ka. March, 1919. 21 pp. 
(Publ. 2582.) 
No. 12. Begoniaceae Centrali-Americanae et Ecuadorenses. By Casimir de 
Candolle. April 9,1919. 10 pp. (Pub. 2533.) - 
VOLUME 70. 
No. 1. A Lower Cambrian Edrioasterid (Stromatocystites walcotti). By 
Charles Schuchert. May 8,1919. 9pp. (Publ. 2534.) 
SMITHSONIAN ANNUAL REPORTS. 
Report for 1917. 
The general appendix of the report for 1917, which was still in 
press at the end of the year, contains the following papers: 
Projectiles Containing Explosives, by Commandant A. R. 
Gold and Silver Deposits in North and South America, by Waldemar Lindgren. 
The Composition and Structure of Meteorites Compared with that of Terres- 
trial Rocks, by George P. Merrill. 
Corals and the Formation of Coral Reefs, by Thomas Wayland Vaughan. 
The Correlation of the Quaternary Deposits of the British Isles with those of 
the Continent of Hurope, by Charles E. P. Brooks. 
Floral Aspects of the Hawaiian Islands, by A. S. Hitchcock. 
Natural History of Paradise Key and the near-by Everglades of Florida, by 
W. E. Safford. 
Notes on the Early History of the Pecan in America, by Rodney H. True. 
The Social, Educational, and Scientific Value of Botanic Gardens, by John 
Merle Coulter. 
Bird Rookeries of the Tortugas, by Paul Bartsch. 
An Economie Consideration of Orthoptera directly Affecting Man, by A. N. 
Caudell. : 
An Outline of the Relations of Animals to their Inland Environments, by 
Charles C. Adams. 
The National Zoological Park: A Popular Account of its Collections, by N. 
Hollister. 
Ojibway Habitations and other Structures, by David I. Bushnell, jr. 
The Sea as a Conservator of Wastes and a Reservoir of Food, by H. F. Moore. 
National Work at the British Museum—Museums and Advancement of Learn- 
ing, by F. A. Bather. 
Leonhard Fuchs, physician and botanist, by Felix Neumann. 
In memoriam: Edgar Alexander Mearns, by Charles W. Richmond. 
William Bullock Clark. 
