74 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1909. 
1812. Cambrian Geology and Paleontology. No. 5, Cambrian Sections of the 
Cordilleran Area. By Charles D. Walcott. Published December 10, 1908. 
Octavo. Pages 167-230, with plates 138-22. Part of Volume LIII. 
Publications numbered 1810, 1811, and 1812 were in continuation of the 
studies of Cambrian Geology and Paleontology, by Charles D. Walcott, the 
series of which began with Nos. 1804 and 1805, Nomenclature of Some Cambrian 
Cordilleran Formations and Cambrian Trilobites. 
There were in press in the regular series of Smithsonian Miscellaneous Col- 
lections at the close of the fiscal year, publication No. 1869, The Mechanics of 
the Earth’s Atmosphere (a collection of translations), second collection, by 
Cleveland Abbe, and No. 1870, Landmarks of Botanical History, Part I, by 
Dr. Edward L. Greene. There were in manuscript form, approved for publi- 
cation, a Bibliography of the Occurrence and Distribution of Tin, by Frank L. 
and Eva Hess, and a Bibliography of Aeronautics, by Paul Brockett, assistant 
librarian of the Institution. 
Ill. SMITHSONIAN ANNUAL REPORTS. 
The Annual Report for 1907 was largely in type at the beginning of the fiscal 
year, but owing principally to a delay in the securing of paper the report was 
not finally published until late in the fall: 
1824. Annual Report of the Board of Regents of the Smithsonian Institution. 
showing the operations, expenditures, and condition of the Institution for the 
year ending June 30, 1907. Octavo. Pages lvii, 726, with 79 plates. 
The following papers, included in the Annual Report of the Board of Regents 
for 1907, and enumerated in the report on publications for 1908, were issued 
separately in pamphlet form: 
1825. Proceedings of Board of Regents for the year ending June 30, 1907. 
Report of Executive Committee, Acts and Resolutions of Congress. Octavo. 
Pages xi-Ivii. 
1826. The Steam Turbine on Land and Sea. By Hon. Charles A. Parsons, 
C. B., M. A., D. Se, F. R. S., M. R. I. Octavo. Pages 99-112, with 8 plates. 
1827. The Development of Mechanical Composition in Printing. By Prof. A. 
Turpain, University of Poitiers. Octavo. Pages 113-129, with 3 plates. 
1828. Some Facts and Problems Bearing on Electric Trunk Line Operation. 
By Frank J. Sprague. Octavo. Pages 131-161, with 7 plates. 
1829. Recent Contributions to Electric Wave Telegraphy. By Prof. J. A. 
Fleming, M. A. D. Se., F. R. S., M. R. I., Pender professor of electrical engineer- 
ing in the University of London. Octavo. Pages 163-198. 
1830. On the Properties and Natures of Various Hlectric Radiations. By 
W. H. Bragg, M. A., F. R. 8., elder professor of mathematics and physics in the 
University of Adelaide. Octavo. Pages 195-214. 
1831. Progress in Electro-Metallurgy. By John B. C. Kershaw. Octavo. 
Pages 215-230, with 10 plates. 
18382. Advances in Color Photography. By Thomas W. Smillie, F. R. P. S. 
Octavo. Pages 231-237, with 1 plate. 
1883. The Structure of Lippmann Heliochromes. By S. R. Cajal. Octavo. 
Pages 2389-259. 
1834. Bronze in South America before the Arrival of the Europeans. By 
Adrien de Mortillet, honorary president of the Société Préhistorique de France. 
Octavo. Pages 261-266. 
1835. Some Opportunities for Astronomical Work with Inexpensive Appara- 
tus. By Prof. George E. Hale, director of the Mount Wilson Solar Observatory 
