REPORT OF THE SECRETARY. 63 
during the year. This report forms an octavo volume of xxii + 876 pages, illustrated 
with 159 figures, 109 plates, and 2 folding maps. 
No, 746. ‘‘Proceedings of the Regents and Report of the Executive Committee 
for the year 1887~88, together with acts of Congress for the year.” (From the 
Smithsonian Report for 1888.) Octavo pamphlet of 33 pages. 
No. 769. ‘* Annual Report of the Board of Regents of the Smithsonian Institution, 
showing the operations, expenditures, and condition of the Institution to July, 1889.” 
This report includes the Journal of Proceedings of the Board of Regents of the In- 
stitution at the annual meeting held January 9, 1889; the Report of the Executive 
Committee of the Board; and the Report of the Secretary of the Institution; followed 
by the ‘General Appendix,” which contains the following papers: The National 
Scientific Institutions at Berlin, by Albert Guttstadt; Hertz’s Researches on Elee- 
trical Oscillations, by G. W. de Tunzelmann; Repetition of Hertz’s Experiments, ete., 
by Frederick T, Tronton; Progress of Meteorology in 1889, by George W. Curtis; 
How Rain is Formed, by H. F. Blanford; On Aerial Locomotion, by F. H. Wenham; 
On the Movements of the Earth’s Crust, by A. Blytt; Time-keeping in Greece and 
Rome, by I’. A. Seely; Botanical Biology, by W. T. Thiselton Dyer; Elementary Prob- 
lems in Physiology, by J.S8. Burdon Sanderson; On Boscovich’s Theory, by Sir Wil- 
ilam Thompson; The Modern Theory of Light, by Oliver J. Lodge; Michelson’s 
Recent Researches on Light, by Joseph Lovering; Photography in the Service of 
Astronomy, by Kh. Radau; The Lifework of a Chemist, by Sir Henry E. Roscoe; Me- 
moir of Heinrich Leberecht Fleischer, by A Miiller; Memoir of Gustay Robert Kirch- 
hoff, by Robertson Helmholtz; On Heredity, by Sir William Turner; Anthropology 
in the Last Twenty Years, by Rudolph Virchow; Scandinavian Archeology, by Ing- 
wald Unset; Progress of Anthropology in 1889, by Otis T. Mason; The Last Steps in 
the Genealogy of Man, by Paul Topinard; The State and Higher Education, by Her- 
bert Adams; The Molecular Structure of Matter, by William Anderson; Aluminium, 
by H. C. Hovey; Alloys of Aluminium, by J. H. Dagger; The Eiffel Tower,by G. Eiffel 
and by William A. Eddy; The Great Terrestrial Globe at the Paris Exhibition of 
1889; Geographical Latitude, by Walter B. Scaife; the whole forming an octavo vol- 
ume of xlvi + 815 pages, illustrated with 33 figures, 
No. 771. “‘ Report of 8. P. Langley, Secretary of the Smithsonian Institution, for 
the year ending June 30, 1890.” Octavo pamphlet of &2 pages, illustrated with two 
maps, 
No. 772. ** Proceedings of the Regents, and Report of the Executive Committee for 
the year 1888~89, together with acts of Congress for the year,” (From the Smith- 
sonian Report for 1889.)  Octavo pamphlet of 36 pages, 
Very respectfully yours, 
W, B, Tayior, 
Editor. 
Mr. S. P. LANGLEY, 
Secretary Smithsonian Institution, 
