18 ANNUAL REPORT SMITHSONIAN INSTITUTION, 19 3 5 



equaling the previous combined collections from the same locality. 

 Fossil remains of the horse Plesippus formed the bulk of the 

 material. 



Dr. W. F. Foshag, curator of mineralogy, spent 4 months in Mex- 

 ico collecting minerals under the auspices of the Roebling fund, 

 visiting important mining districts in the Sierra Madres of western 

 Chihuahua and vicinity and in southern Mexico. 



E. P. Henderson, assistant curator of mineralogy, investigated 

 reports of meteorites and collected minerals in Arkansas, Kansas, 

 and Virginia. 



Dr. G. A. Cooper, assistant curator of stratigraphic paleontology, 

 with a group of Geological Survey geologists, studied the region 

 near Phillipsburg, Quebec, and collected many fossils. He also vis- 

 ited the lower peninsula of Michigan, to study the Devonian strata 

 near Alpena, as well as southwestern Ontario, northwestern Ohio, 

 and western New York. Also, with R. D. Mesler, of the Geological 

 Survey, he collected fossils at Batesville, Ark. 



MISCELLANHOUS 



Visitors. — Visitors 'during the year to the various Museum build- 

 ings totaled 1,841,306, an increase of 377,931 over the previous year. 

 The annual attendance in the several buildings was recorded as 

 follows: Smithsonian Building, 307,240; Arts and Industries Build- 

 ing, 798,535 ; Natural History Building, 606,145 ; Aircraft Building, 

 129,386. During April 1935 there were 307,739 visitors, the largest 

 number ever recorded for a single month. 



Publicaiions. — On account of the greatly curtailed allotments for 

 printing, the publication output of the Museum was small. Only 

 8 papers were issued during the year, including the annual report 

 for 1934 and 7 Proceedings papers. These are listed elsewhere in 

 this report. Volumes and separates distributed during the year to 

 libraries and individuals throughout the world aggregated 26,592 

 copies. 



Work was continued, under the supervision of the Museum editor, 

 on the preparation of the index to Museum publications started last 

 year. 



Special exhibits. — Seventeen special exhibits were held during the 

 year, under the auspices of various educational, scientific, and Gov- 

 ernment agencies, including, among others, the American Forestry 

 Association, the Potomac Rose Society, the District of Columbia 

 Dental Society, the American Society of Photogrammetry, the Pub- 

 lic Works Administration, and the Commission of Fine Arts. 



Changes in organization and staff. — Dr. Edward A. Chapin, of 

 the United States Bureau of Entomology and Plant Quarantine, 



