April U, 1916] 



SCIENCE 



531 



relating to biological problems. Opportunities 

 are especially good for studies relating to fish 

 and mussels. Investigators desiring to occupy 

 tables for the whole or part of the season 

 should communicate with the commissioner of 

 fisheries, Washington, D. C, or the director of 

 the station. 



The Experimental Station Record states 

 that four new Canadian entomological labo- 

 ratories were completed during the summer of 

 1915, located respectively at Annapolis Eoyal, 

 Ifova Scotia; Frederickton, New Brunswick; 

 Treesbank, Manitoba ; and Lethbridge, Alberta. 

 The laboratory at Frederiekton is the most 

 elaborate of these structures and is a two-story 

 and basement brick building 24 by 30 feet, 

 located on the campus of the University of 

 New Brunswick. Its work has been especially 

 directed toward the natural control of insects, 

 notably the brown-tail moth, tent caterpillar, 

 spruce budworm and fall webworm. The labo- 

 ratory at Annapolis Royal is a wooden one- 

 story and basement building, 26 feet square. 

 It is located on the county school grounds and 

 is equipped with special reference to combating 

 the brown-tail moth and for studies of the bud 

 moth, fruit worm and other fruit pests. It 

 replaces a former temporary • laboratory at 

 Bridgetown, which is to be used as a substa- 

 tion wherever most needed. The laboratories 

 at Treesbank and Lethbridge are of the bunga- 

 low type, the former being 12 by 16, and the 

 latter, located on the Dominion substation 

 farm, 23 by 20 feet. 



At the University of Chicago a contract has 

 been made with the United States Department 

 of Agriculture for the establishment in Julius 

 Eosenwald Hall of a meteorological observa- 

 tory of the United States Weather Bureau. 

 Instruments for observation are to be placed 

 upon the roof of the tower, and instruments for 

 registering seismic disturbances and for other 

 purposes of the bureau are to be installed in 

 the building. Bain gauges and a thermom- 

 eter shelter are to be placed on the campus. 

 By the terms of the contract the faculty and 

 students of the university may have free ac- 

 cess, within reasonable limits, to the records 

 of observations made and of data gathered; 



and printed matter containing the results of 

 investigations based upon observations made 

 in this observatory will show the cooperation 

 of the university with the department. 



We learn from the Auh that Mr. W. Leon 

 Dawson, of Santa Barbara, Cal., has made over 

 his valuable collection of birds' eggs and nests 

 to a board of trustees who are incorporating an 

 institution to be known as the Museum of 

 Comparative Oology, in which it is hoped to 

 accumulate a representative collection of the 

 nests and eggs of the birds of the world. Mr. 

 Dawson is to have responsible control of the 

 collection during his life in order to insure its 

 proper care during the early years of the 

 enterprise. At the expiration of three years, 

 during which he will be engaged in field work 

 in connection with the forthcoming " Birds 

 of California," a campaign wiU be inaugu- 

 rated for an endowment and a group of build- 

 ings suitable for housing the collection. A 

 number of prominent oologists and ornithol- 

 ogists have been invited to form a board of 

 visitors to cooperate with the museum manage- 

 ment. 



The trustees of the National Dental Asso- 

 ciation have purchased a large private resi- 

 dence in Cleveland, 0., as temporary quarters 

 for a new Eesearch Institute until adequate 

 buildings can be erected. The Eesearch In- 

 stitute is supported entirely by the association, 

 and the plan of organization is a corporation 

 with a membership of sixty, twenty-seven of 

 whom are elected by the trustees of the ISTa-i 

 tional Dental Association and known as com- 

 mission members, and thirty-three are perma- 

 nent members and are selected by the corpo- 

 ration. The board of nine trustees has chief 

 responsibility for the conducting of the work 

 in the institution and carried on under grants. 

 They are assisted by an advisory board of 

 eighteen. It is said to be the first institution 

 of its kind in the world. Various problems 

 contemplated for study are: Pyorrhea, dental 

 caries, mouth infections, relation of baby foods 

 to tooth structure, relation of glands of in- 

 ternal secretion to defective tooth structure, 

 staining of teeth, etc. Part of the work will 



