July 20, 1917] 



SCIENCE 



59 



Y., known for his work on the electric furnace 

 and the determination of carbon, in steel, and 

 later for work on the conservation of water 

 for power, has died at the age of seventy- 

 three years. 



Philippe de Vilmorin, known for his work 

 in plant and animal genetics and head of the 

 well-known seed-gTowing establishment, died 

 on June 30, at the age of forty-five years. 



Dr. Vitali, formerly professor of pharma- 

 ceutical chemistry in the University of Bo- 

 logna, has died at Venice at the age of eighty- 

 five. 



We learn from Nature that the late Lord 

 Justice Stirling's herbarium, consisting chiefly 

 of about 6,000 varieties of mosses and liver- 

 worts from many parts of the world, has been 

 presented by Lady Stirling to the Tunbridge 

 Wells Natural History Society. 



Free public lectures will be delivered in the 

 lecture hall of the museum building of the 

 New York Botanical Garden, Bronx Park, on 

 Saturday afternoons, at four o'clock during 

 the summer as follows: 



July 7. Wild flowers of summer, by Dr. N. L. 

 Britton. 



July 14. Plants grown by the American In- 

 dians, by Dr. A. B. Stout. 



(Exhibition of Flowers, July 14 and 15.) 



July 21. Flowers for the summer garden, by 

 Mr. G. V. Nash. 



July 28. How the introduction of foreign plant 

 diseases is prevented, by Mr. H. B. Shaw. 



August 4. Floral and scenic features of Cuba, 

 by Dr. M. A. Howe. 



August 11. Books on gardening, by Dr. J. H. 

 Barnhart. 



August 18. Trees and flowers of the Yellow- 

 stone National Park, by Dr. P. A. Eydberg. 



August 25. Insect enemies of plants, by Dr. F. 

 J. Seaver. 



(Exhibition of Gladioli, August 23-26.) 



The department of physics at the Univer- 

 sity of Illinois is giving the following popular 

 lectures in the summer session on recent ad- 

 vances in physics: 



Professor C. T. Knipp: The production of high 

 vacua; discharge of electricity through gases; elec- 



trons and X-rays; the electrostatic and magnetic 

 deflection of cathode rays (electrons) ; positive 

 electricity. 



Professor Jakob Kunz: The electron; Eadiation; 

 Photo-electricity. 



Mr. Sebastian Karrer: X-rays and structure of 

 crystals. 



Mr. C. S. Fazel: Atomic models and chemical 

 properties; Atomic models and radiation. 



Mr. H. T. Booth: Temperature measurements. 



Mr. W. H. Hyslop: Wireless telegraphy. 



Professor J. W. Hornbeck (Carleton College) : 

 Electromagnetic waves. 



Professor F. E. Watson: Acoustics of buildings; 

 Acoustical phenomena. 



The Bureau of Fisheries announces the 

 continuation of the investigation of lakes in 

 Wisconsin, which is directed by Dr. E. A. 

 Birge, of the University of Wisconsin. Dr. 

 ]Sr. L. Gardner, of the University of Cali- 

 fornia, is making a systematic and economic 

 study of the marine algae of the Pacific coast. 

 A small allotment has been made for investi- 

 gation of parasites of fishes in Oneida Lake, 

 ]Sr. Y., in connection with the biological sur- 

 vey of that lake under the direction of Dr. 

 C. C. Adams, of the New York State School 

 of Forestry. Dr. J. J. Wolfe, of Trinity Col- 

 lege, N. C, assisted by Mr. Bert Cunningham, 

 will continue his studies of the plankton col- 

 lections in Chesapeake Bay made by Lewis 

 EadclifFe in connection with the extended 

 survey of the bay. Mr. Willis H. Rich, of 

 Stanford University, will continue the in- 

 vestigations of the habits and migrations of 

 the Pacific salmons. Dr. J. E. Eeighard, of 

 the University of Michigan, will be engaged 

 in studies of the breeding habits of fishes and 

 will also direct investigation of the distribu- 

 tion and habits of salmonoid fishes of the 

 Great Lakes, based in part upon field observa- 

 tion and collections and in part upon a study 

 of scale characters. Among other investiga- 

 tions that will be continued in progress are 

 those of Dr. A. H. Wright, of Cornell Uni- 

 versity, on the natural history and propaga- 

 tion of frogs, and Professor Trevor Kincaid, 

 of the University of Washington, on the cul- 

 ture of oysters in Puget Sound. 



