424 



SCIENCE 



[N. 8. Vol. XXVII. No. 



by affiliated societies have been twelve lectures 

 given by tlie Chicago Medical Society and the 

 Society of Social Hygiene on preventive medi- 

 cine. The Illinois Audubon Society also held 

 its annual meeting in the spring. The total 

 number of lectures and meetings has been 

 thirty-four, at which the combined attendance 

 was 4,008. The smallest number present was 

 fifty and the largest three hundred, the seat- 

 ing capacity of the lecture hall being two 

 hundred. 



The academy has been officially represented 

 at several notable gatherings of scientific 

 men, including the Illinois State Academy of 

 Sciences, the Seventh Zoological Congress, the 

 American Association for the Advancement 

 of Science and the American Association of 

 Museums. 



The Entomological Section has held eleven 

 meetings, at which papers of interest have 

 been read and discussed. 



The Natural History Survey has published 

 two reports on the fauna of the Chicago Area, 

 Bulletin IV., part II., on the " Trilobita of 

 the Niagaran Limestone," by Dr. Stuart 

 Weller, and Bulletin VI., on the " Birds of 

 Chicago," by Mr. F. M. Woodruff. A special 

 illustrated edition of the bird bulletin was 

 prepared for free distribution among the 

 schools and teachers of Chicago and the op- 

 portunity was taken advantage of by a large 

 number of both schools and teachers. The 

 academy has been the recipient of many 

 favorable comments for thus aiding in the 

 study of the local bird fauna. 



The curator's report showed that interest 

 in the museum by visitors, schools and students 

 was increasing. The schools have made use of 

 the collections to an unprecedented degree and 

 the exhibit collections have been largely used 

 for the acquisition of general information. 

 Laboratory and study facilities have been 

 provided for those who desired to work at the 

 academy building. 



During the year the building has been re- 

 decorated throughout, the light oak cases on 

 the main floor have been refinished in weath- 

 ered oak and the interiors of the cases have 

 been painted a blue-gray color. All museum 



cases have been installed with glass shelves 

 with inconspicuous supports. 



The notable additions to the exhibits have 

 been a collection of economic minerals with 

 distribution maps; a collection of Philippine 

 Land Mollusks from the Quadras collection; 

 a large expansion of the exhibit illustrating 

 the pearl button industry; the expansion of 

 the collection of native birds with their nests 

 and eggs or young and with habitat maps, and 

 an ecological collection of invertebrates, 

 arranged in groups. 



The label department showed a total of 

 8,088 labels produced. 



A feature of the academy's work has been 

 the identification of material for institutions 

 and individuals, which amounted to 2,625 

 specimens, submitted by twelve individuals 

 and institutions. 



The accessions for the year aggregated 30,- 

 111 specimens, of which 28,54Y were in the 

 department of Mollusca. 



The annual election of officers for the year 

 1908 resulted as follows : 



President — T. C. Chamberlin. 



Vice-presidents — Charles S. Eaddin and Albert 

 L. Stevenson. 



Acting Secretary — Frank C. Baker. 



Trustees (five years) — Charles S. Kaddin and 

 Charles H. Blatehford. 



Executive Board (three years) — Stuart Weller 

 and Lester Curtis. 



Frank C. Baker, 

 Acting Secretary 



THE BIOLOGICAL SOCIETY OP WASHINGTON 



The 438th meeting was held January 25, 

 1908, President Stejneger in the chair. 



The first communication consisted of an 

 " Exhibition of Colored Lantern Slides by the 

 Autochrome Plates," by Professor W. P. Hay. 

 He discussed the process of direct color pho- 

 tography recently perfected by the Lumieres, 

 of Lyons, France, in its relation to scientific 

 work and exhibited a number of lantern slides 

 made on the new " Autochrom " plates. 



These plates bear a panchromatic film of 

 great delicacy and sensitiveness underlaid by 

 a stratum of starch grains colored orange-red, 

 purplish blue, and green. The granules aver- 



