Jan. 1935 Annual Report of the Director 195 



In the coffee exhibit several samples which had been on display 

 for many years were replaced by new specimens of the exchange 

 standards of Brazilian and Colombian coffee furnished by the New 

 York Coffee and Sugar Exchange. 



Further additions were made to the North American trees in 

 Charles F. Millspaugh Hall (Hall 26). At the northwest end of the 

 hall there was installed an exhibit, occupying one entire case, of sugar 

 pine. The material used for this installation was obtained through 

 the cooperation of Professor Emanuel Fritz, of the University of 

 California at Berkeley, and was in part contributed by him personally. 

 Other new exhibits completed are of ponderosa pine, the gift of 

 Edward Hines Lumber Company, Chicago; of southern white cedar, 

 material for which was furnished by the Richmond Cedar Works, 

 Richmond, Virginia; and of Osage orange. 



An attractive addition to the foreign woods in Hall 27 is a group 

 of seven boards representing important timbers of the Republic of 

 Honduras, a gift from the United Fruit Company of Boston. Of 

 the large collection of Japanese woods, which have been on exhibition 

 for several years, one case was refinished and reinstalled. 



To the plant raw materials and products in Hall 28 there was 

 added a case displaying specimens of the principal species of rubber 

 obtained from widely separated regions of the world. These are 

 arranged in two groups: one showing the steps in the production 

 of smoked and vulcanized sheets from latex of the Para rubber trees; 

 the other including samples of various other species, mostly of lesser 

 commercial importance, or of more restricted industrial application, 

 such as hule or guayule rubber from Mexico, balata from Peru, 

 Ceara rubber from northeastern Brazil, Accra or African rubber, 

 gutta-percha and Jelutong rubber from Malaya, Assam rubber, and 

 finally a Colorado rubber plant as a representative of the various 

 North American species which yield latex containing rubber. 



DEPARTMENT OF GEOLOGY 

 expeditions and research 



Collecting for the Department of Geology in 1934 was limited to 

 short expeditions by members of the staff, which were conducted 

 without appropriation by the Museum for expenses. 



Associate Curator Elmer S. Riggs spent sixteen days in Nebraska 

 and South Dakota collecting vertebrate fossils and examining 

 prospects for future collecting. He also made two short trips 

 within Illinois for the same purpose. Mr. Phil C. Orr spent a day 



