the University of Illinois. Albert W. Forslev, Associate Curator 

 of Mineralogy, presented a paper on X-ray diffraction and spectro- 

 graphic techniques in forensic problems at the homocide workshop 

 held in the Museum by the Society of Forensic Pathologists and was 

 a judge of mineral exhibits at the Phoenix (Arizona) Gem and Min- 

 eral Show sponsored by the Rocky Mountain Federation of Mineral 

 Societies and at the Midwest Gem and Mineral Show sponsored by 

 the Midwest Federation of Mineral Societies held in Downers Grove 

 (Illinois). A class in mineralogy from the University of Illinois 

 (Chicago undergraduate division) spent an afternoon in the William 

 J. and Joan A. Chalmers Mineralogical Laboratory, where they were 

 given a demonstration of X-ray diffraction procedures in mineral- 

 ogical analysis by Associate Curator Forslev. On two occasions, 

 when classes in zoology from Indiana University and a class in 

 geology from the University of Wisconsin visited the Museum, Dr. 

 Rainer Zangerl, Curator of Fossil Reptiles, lectured on paleontology. 



Philip Hershkovitz, Curator of Mammals, gave a lecture on 

 the classification of New World primates to graduate students 

 in physical anthropology at the University of Chicago. Dr. Robert 

 F. Inger, Curator of Amphibians and Reptiles, who has been appointed 

 to the Committee on Paleozoology at the University of Chicago, 

 lectured for the Zoology Club of the University of Chicago and 

 for the Department of Zoology of the University of Texas. Rupert 

 L. Wenzel, Curator of Insects, held seminars for the Department of 

 Anatomy of the University of Illinois and the Department of 

 Biology of Northwestern University. Henry S. Dybas, Associate 

 Curator of Insects, lectured for the Department of Entomology of 

 the University of Illinois, the Conservation Council, the Chicago 

 Entomological Society, and the Biology Club of Thornton (Illinois) 

 Fractional High School and attended meetings in Washington, D.C., 

 of the American Mosquito Control Association. D. D wight Davis, 

 Curator of Vertebrate Anatomy, who has been appointed to the 

 Scientific Advisory Committee of the Chicago Zoological Society, 

 lectured at the University of Chicago before a class in physical 

 anthropology and conducted a seminar at the University of Illinois 

 College of Medicine on the masticatory apparatus in mammals. 



A combined group that included the advanced entomology class 

 of the University of Illinois, the field biology class of Northwestern 

 University, the field zoology class of Roosevelt University, and the 

 Chicago Entomological Society spent a day in the Division of 

 Insects. Following a talk by Curator Wenzel on Museum collections 

 and research, the group was taken on guided tours. Other classes 

 that spent a day in the Division of Insects under the guidance of 



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