78 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1909. 
of logarithms are urgently needed in order to save recurrent computation on the 
part of observers and investigators. It was therefore decided to publish the 
present volume of Mathematical Tables on ‘ Hyperbolic functions.’ 
“ Hyperbolic functions are extremely useful in every branch of pure physics 
and in the application of physics, whether to observational and experimental 
sciences or to technology. Thus whenever an entity (such as light, velocity, 
electricity, or radioactivity) is subject to gradual extinction or absorption the 
decay is represented by some form of Hyperbolic functions. Mercator’s pro- 
jection is likewise computed by Hyperbolic functions. Whenever mechanical 
strains are regarded as great enough to be measured they are most simply 
expressed in terms of Hyperbolic functions. Hence geological deformations 
invariably lead to such expression, and it is for that reason that Messrs. Becker 
and Van Orstrand, who are in charge of the physical work of the United States 
Geological Survey, have been led to prepare this volume.” 
VY. PUBLICATIONS OF THE UNITED STATDPS NATIONAL MUSEUM. 
The publications of the National Museum are: (@) The annual report, form- 
ing a separate volume of the Report to Congress by the Board of Regents of 
the Smithsonian Institution; (0) The Proceedings of the United States National 
Museum; (c) The Bulletin of the United States National Museum; and (d) the 
Contributions from the United States National Herbarium. The editorship of 
these publications is in charge of Dr. Marcus Benjamin. 
The publications issued during the year are enumerated in the Report on 
the National Museum. ‘These included Volume XXXIV of the Proceedings, 
containing Museum papers numbered 1610 to 1630; Volume XXXV, papers 
numbered 1631 to 1658; and Volume XXXVI, papers numbered 1659 to 1694. 
Three bulletins were issued: 
62. Catalogue of the Type Specimens of Mammals in the United States Na- 
tional Museum, including the Biological Survey Collection. By Marcus Ward 
Lyon and Wilfred H. Osgood. 
638. A Monographie Revision of the Coleoptera belonging to the Tenebrionids 
Tribe Eleodiini inhabiting the United States, Lower California, and Adjacent 
Islands. By Frank H. Blaisdell, sr. 
64. A Critical Summary of Troost’s Unpublished Manuscript on the Crinoids 
of Tennessee. By Elvira Wood. 
In the series of Contributions from the United States National Herbarium 
there appeared: 
Volume XII, part 4. The Mexican and Central American Species of Sapium, 
by Henry Pittier; Volume XII, part 5, New or Noteworthy Plants from Colom- 
bia and Central America, by Henry Pittier; Volume XII, part 6, Catalogue of 
the Grasses of Cuba, by A. S. Hitchcock; Volume XII, part 7, Studies of Mexi- 
can and Central American Plants, No. 6, by J. N. Rose; Volume XII, part 8, 
The Allionacee of the United States, with notes on Mexican Species, by Paul C. 
Standley; Volume XII, part 9, Miscellaneous Papers, by J. N. Rose, N. L. 
Britton, and William Maxon; and Volume XIII, part 1, Studies of Tropical 
American Ferns, No. 2, by William Maxon. 
VI. PUBLICATIONS OF THE BUREAU OF AMERICAN BTHNOLOGY. 
The publications of the bureau are discussed in detail in another appendix 
of the Secretary’s report. The editorial work is in charge of Mr. J. G. Gurley. 
The Twenty-sixth Annual Report was issued during the summer, together with 
the usual number of separates of the accompanying papers, and also Bulletins 
34, Physiological and Medical Observations Among the Indians of Southwestern 
