1938 



12 ANNUAL, REPORT SMITHSONIAN INSTITUTION 



stone carving; skin dressing; application of vegetable dyes; basket 

 weaving; embroidery work with split and died porcupine quills and 

 with glass beads; sewed feather designs; and free-hand painting of 

 decorative and symbolic designs. The craftsmanship of some 15 

 American Indian tribes was represented in the exhibit including the 

 Comanche, Sioux, Cheyenne, Shoshone, Poma, Apache, Chippewa, 

 and Kiowa. 



The exhibit was arranged in two exhibition cases especially designed 

 for the purpose, and with each object there were placed brief descrip- 

 tive labels in both English and French. 



SEVENTH ARTHUR LECTURE 



The seventh Arthur lecture, The Sun and the Atmosphere, was 

 given by Dr. Harlan True Stetson, of the Massachusetts Institute of 

 Technology, in the auditorium of the National Museum on the evening 

 of February 24, 1938. Dr. Stetson, one of the world's leading authori- 

 ties on the solar-terrestrial relationship, discussed particularly the sun- 

 spots and their effect upon various terrestrial matters. The lecture 

 is published in the General Appendix to the present report (p. 149). 



The Arthur lecture was provided for in the will of the late James 

 Arthur, of New York City, who left to the Institution in 1931' a sum 

 of money, part of the income from which should be used for an 

 annual lecture on some aspect of the study of the sun. 



EXPLORATIONS AND FIELD WORK 



Twenty-four expeditions during the last calendar year took Smith- 

 sonian representatives to 13 States in the United States and many 

 foreign countries to collect specimens and data needed in the scientific 

 researches of the Institution. 



Dr. Charles W. Gilmore directed exploration for dinosaur and mam- 

 malian fossils in Utah and Arizona. Dr. Charles E. Eesser studied 

 the Cambrian rocks of New York, Vermont, and Quebec. Dr. G. 

 Arthur Cooper collected fossils needed in current investigations in 

 Michigan, Pennsylvania, New York, and Canada. E. P. Henderson, 

 representing the Smithsonian at the International Geological Con- 

 gress in Moscow, had an opportunity to study the minerals of Eussia. 



Dr. Alexander Wetmore visited Venezuela to observe the bird life 

 of that part of South America. A collection of birds, including the 

 very rare Asiatic fin foot and the Malayan ring plover, was made by 

 H. G. Deignan in Siam. Gerrit S. Miller, Jr., spent 3 months in 

 Panama collecting animals and plants. Watson M. Perrygo, con- 

 tinuing the work begun last year, went to Tennessee to obtain bird 

 and mammal specimens needed for the Museum collections. Dr. 



