34 REPORT ON NATIONAL MUSEUM, 1886. 



Lieuteuant Wiiiterhaltor and Dr. Nash, of tLe U. S. Navy ; Mr. Thomas 

 Lee, of the U. S. Fish Cominissioii, aud Mr. II. L. Turner, of the CJeo- 

 logical Survey. Mr. Dodge has already rendered vahiable services iu 

 photography to the Museum. Mr. Merrill has photographed for his 

 own department numerous stone quarries, mud cracks, drift bowlders, 

 etc. From Mr. Thomas Lee have beeu received several valuable nega- 

 tives which he nuide on the cruise of the Albatross. 



The Saturday Lectures, given under the joint auspices of the Anthro- 

 pological and Biological Societies of Washington, were delivered, as in 

 j)revious years, in the Lecture Hall. The programme of the. course was 

 as Ibllows: 



Saiurda;/, Mitrch G. — Mr. William IIallock: Tliu Gey.scns of tlio Yollowatone. 

 Frida;/, March 12.— Piof. William IIauknkss: How (be Sohir System is Measured. 

 Salurddi/, March oO.— Prof. T. C. Mendeniiall : The Nuliue of Sound. 

 Saturdat/, March 27. — Prof. F. W. Clahkk : Tlie Clieuiistry of Coal. 

 Saturdaij, April [i. — Dr. C. IIakt Meukiam : The Migration of Binls. 

 Saliirdaij, April 10. — Dr. Washington Matthews, U. S. Army : The Gods of tlio 

 Nuvajos. 



Friday, April 16.— Dr. D. B. Simmons: Social Status of tlie Women of Japan. 

 Saturday, April 24.— Prof. W. K. Bkooks : -Life. 



Saturday, May 1. — Mr. Lestek F. Waud: Heredity aud 0{»portunity. 

 Saturday, May 8. — Dr. J. S. Billings, U. S. Army: Animal Heat. 



(/) Meetings ok Societies. 



As in previous years, several societies have availed themselves of the 

 privilege of using the Lecture Hall for their meetings. These have 

 been the National Academy of Sciences, the Biological Society of Wash- 

 ugtou, Entomological Society of Washington, and the Meteorologists' 

 Convention. 



Since the p:i])ers read at the meetings of these societies have in many 

 instances related to the work of the Museum, and were illustrated i)y 

 Museum specimens, the titles are given below : 



NATIONAL ACADEMY OF SCIENCES. 



(Meetings April 20,21,22, 1886.) 



G. K. GlLHEKT. — The Geologic Age of the E(iuu.s Fauna." 



T. Stekky Hunt. — The Cowlea Electrical Furnace.* 



E. D. Cope.— On the Phylogeny of the Batraehia.* 



E. D. Cope. — On tlie Phylogeny of the Placental Mammalia.* 



H. A. Newton. — The Comet of Biela.* 



Elias Loomis.— Areas of High Barometric Pressure over Europe and Asia.t 



S. H. SCUDDER. — The Cockroach in the past aud in the prosent.t 



Alfred M. Mayer. — On the diathermancy of Ebonite and Obsidian, and on the 



production of Calorescence by means of screens of Ebonite and Obsidian.! 

 Aleked M. Mayer. — On the Coelilicieut of Expansion of Ebonite. t 

 Alfred M. Mayer. — On the determination of the Cubical Expansion of a solid by 



a method which does not re([uire calibration of vessuls, weighings, or linear measure.! 

 Alfred M. Mayer. — On Measures of ab.solute Radiation. t 

 E. D. Cope. — On the Geology of the region near Zacualtipau, Hidalgo, Mexico. | 



' Kead April 20. t Read April 21. X Read A pril 22. 



