° Appenpix VIII. 
REPORT ON THE PUBLICATIONS. 
Sir: I have the honor to submit the following report on the publications of 
the Smithsonian Institution and its branches during the fiscal year ending 
June 380, 1911: 
The total number of copies of publications of the Smithsonian Institution and 
its branches distributed during the year was 197,206. This aggregate in- 
cluded 643 volumes and separates of Smithsonian Contributions to Knowledge, 
35,935 of Smithsonian Miscellaneous Collections, 19,622 special publications, in- 
eluding 2,743 volumes on the Harriman Alaska expedition; 518 publications 
not included in the Smithsonian series; 22,482 annual reports and bulletins of 
the Bureau of American Ethnology, and 110,000 copies of the various publica- 
tions of the National Museum. 
I. SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE. 
The Langley Memoir on Mechanical Flight which was begun by the late Sec- 
retary Langley in 1904, and continued by Mr. Charies M. Manly, assistant in 
charge of experiments, was in type and nearly ready for distribution at the 
close of the year. This work forms a part of volume 27 of the Contributions 
to Knowledge. 
II. SMITHSONIAN MISCELLANEOUS CCLLECTIONS. 
In the series of Smithsonian Miscellaneous Collections were published (1) 
cover and preliminary pages for volume 51; (2) two papers of volume 53, with 
cover, preliminary pages, and index, completing that volume; (3) thirteen 
papers of volume 56; (4) four papers of volume 57; (5) and the Smithsonian 
Physical Tables, by F. E. Fowle, forming part of volume 58. 
The issues of the Smithsonian Miscellaneous Collections during the year were 
- as follows: 
1928. Smithsonian Miscellaneous Collections. Cover and preliminary pages for 
volume 54. Octavo. Pages v. 
1934. Cambrian Geology and Paleontology. No.6: Olenellus and other Genera 
of the Mesonacide. By Charles D. Walcott. Published August 12, 1910. 
Octavo. Pages 231-422 (unpaged index), with Plates 23-44. Volume 53, 
No. 6. 
1989. Cambrian Geology and Paleontology. No. 7: Pre-Cambrian Rocks of the 
Bow River Valley, Alberta, Canada. By Charles D. Walcott. Published 
August, 1910. Octavo. Pages 4238-431, with Plates 45-47. Volume 53. No. 7. 
1940. Cambrian Geology and Paleontology. II. Abrupt Appearance of the 
Cambrian Fauna on the North American Continent. By Charles D. Walcott. 
Published August 18, 1910. Octavo. Pages 1-16. Volume 57, No. 1. 
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