REPORT OF THE SECRETARY. 115 



The history of the discovery of sexuality in plants. By Duncan S. Johnson. 



24 pp. (Publ. 2337.) 

 Problems and progress in plant pathology. By L. R. Jones. 13 pp. (Publ. 



2338.) 

 Plant autographs and their revelations. By Jagadis Chunder Bose. 23 pp. 



(Publ. 2339.) 

 The National Zoological Park and its inhabitants. By Frank Baker. 34 pp., 



41 pis. (Publ. 2340.) 

 On the habits and behavior of the herring gull. By R. M. Strong. 31 pp., 10 



pis. (Publ. 2341.) 

 Notes on some effects of extreme drought in Waterberg, South Africa. By 



Eug&ue N. Marais. 12 pp. (Publ. 2342.) 

 Homoeotic regeneration of the antennae in a Phasmid or walking-stick. By 



H. O. Schmit- Jensen. 14 pp., 2 pis, (Publ. 2343.) 

 Latent life: Its nature and its relations to certain theories of contemporary 



biology. By Paul Becquerel. 15 pp. (Publ. 2344.) 

 The early inhabitants of western Asia. By Felix v. Luschan. 25 pp., 12 pis. 



(Publ. 2345.) 

 Excavations at Abydos. By Edouard Naville. 7 pp., 3 pis. (Publ. 2346.) 

 An examination of Chinese bronzes. By John C. Ferguson. 6 pp., 14 pis. 



(Publ. 2347.) 

 The role of depopulation, deforestation, and malaria in the decadence of certain 



nations. By Felix Regnault. 5 pp. (Publ. 2348.) 

 The story of the chin. By Louis Robinson. 11 pp., 12 pTs. (Publ. 2349.) 

 Recent developments in the art of illumination. By Preston S. Millar. 18 



pp., 2 pis. (Publ. 2350.) 

 The loom and spindle : Past, present, and future. By Luther Hooper. 49 pp., 



11 pis. (Publ. 235L) 

 The demonstration play school of 1913. By Clark W. Hetherington. 29 pp. 



(Publ. 2352.) 

 Sketch of the life of Eduard Suess (1831-1914). By Pierre Termier. 10 pp. 



CPubl. 2353.) 



Report for 1915. 



The report of the executive committee and proceedings of the 

 Board of Regents of the Institution, and the report of the Secretary, 

 both forming part of the Annual Report of the Board of Regents to 

 Congress^ were issued in pamphlet form in December, 1915 : 



Report of the executive committee and proceedings of the Board of Regents of 

 the Smithsonian Institution for the year ending June 30, 1915. 21 pp. 

 (Publ. 2380.) 



Report of the Secretary of the Smithsonian Institution for the year ending June 

 30, 1915. 110 pp. (Publ. 2379.) 



Small editions of the following papers, forming the general appen- 

 dix of the report for 1915, were issued in May, 1916, and the complete 

 volume was received from the printer in June: 



Review of astronomy for the year 1913, by P. Puiseux. 9 pp. (Publ. 2383.) 

 The utilization of solar energy, by A. S. E. Ackermann. 26 pp., 6 pis. (Publ. 



2384.) 

 The constitution of matter and the evolution of the elements, by Ernest Ruther- 

 ford. 36 pp., 5 pis. (Publ. 2385.) 



