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SCIENCE 



[N. S. Vol. XLV. No. 1161 



tlie Crocker Land expedition back to New- 

 foTindland late in August. 



Dr. Simon Plexner, of the Rockefeller In- 

 stitute, lectured at Wellesley College, on March 

 9, on " The Physical Basis of Immunity." 



The Cutter lecture on preventive medicine 

 and hygiene will be given by Dr. Ludwig Hek- 

 toen, director of the Memorial Institute for In- 

 fectious Diseases, Chicago, on April 3, at the 

 Harvard Medical School. Dr. Hektoen will 

 discuss " Poliomyelitis in the Light of Recent 

 Observations." 



Professor H. S. Jennings, of the Johns Hop- 

 kins University, is delivering a series of four 

 Westbrook lectures on Heredity and Evolution 

 at the Wagner Institute, Philadelphia. 



Graduate seminars will be ofiered in the 

 coming summer session of the University of 

 California by Professor E. C. Franklin on 

 " Non-Aqueous Solutions " and by Professor 

 J. H. Hildebrand on " The Theory of Solubil- 

 ity." 



On March 8 Dr. Haven Metealf, of the Bu- 

 reau of Plant Industry, delivered an address 

 before the department of plant pathology of 

 the University of Wisconsin on " The White 

 Pine Blister Rust: An Example of the Im- 

 ported Plant Disease." 



Professor Frederick C. Ferry, dean of Wil- 

 liams College, gave, on March 1, an address on 

 " Present Problems of Mathematics Teachers 

 in Secondary Schools," before the Mathematics 

 Club of Vassar College. 



James Alton James, chairman of the board 

 of graduate studies and professor of history at 

 Northwestern University, delivered an illus- 

 trated lecture on " The Conservation of His- 

 toric Sites in Illinois " at a meeting of the So- 

 ciety of the Friends of our Native Landscape 

 on the evening of March 20, at Fullerton Hall, 

 Art Institute, Chicago. 



Professor Robert F. Griggs, of the Ohio 

 State University, lectured on March 17 before 

 the University Club of Chicago on " The 

 Valley of the Ten Thousand Smokes." 



The fifth annual conference of the A m erican 

 Association of Agricultural Editors will be 

 held at Cornell University on Thursday and 



Friday, June 28 and 29. This association is 

 made up of the editors of the agricultural col- 

 leges and experiment stations, and meets an- 

 nually to exchange ideas. Among the institu- 

 tions represented are the state universities of 

 Ohio, Wisconsin, Illinois, West Virginia, Ken- 

 tucky, Tennessee, Missouri, North Dakota, 

 South Dakota, Mississippi and Minnesota; the 

 state agricultural colleges of Iowa, Massachu- 

 setts, Maryland, Michigan, Georgia, Okla- 

 homa and Kansas; Clemson College and Pur- 

 due and Cornell imiversities. 



During the year 1916-lY the graduate 

 courses in chemistry at the Johns Hopkins 

 University have included a series of lectures 

 on selected topics by chemists from other in- 

 stitutions. The subjects chosen have been gen- 

 erally of a physical-chemical nature. Those 

 who have thus far participated in these lec- 

 tures are: Professor Gilbert N. Lewis, of the 

 University of California, who gave three lec- 

 tures on the subject of free energy; Professor 

 Harry N. Hobnes, of Oberlin College, whose 

 subject was the formation of crystals in gels; 

 Dr. Irving Langmuir, of the General Electric 

 Company, the structure of liquids and solids; 

 Dr. Walter A. Patrick, of Syracuse University, 

 who gave five lectures on colloidal chemistry. 



The Morison lectures before the Royal Col- 

 lege of Physicians of Edinburgh were delivered 

 on March 5 and 9 by Dr. Edwin Bramwell, the 

 subject being The Neurology of the War. The 

 first lecture dealt with gunshot wounds of the 

 peripheral nerves, and the second with shell 

 shock and some effects of head injuries. 



The Huxley lecture at the University of Bir- 

 mingham is to be delivered by Professor 

 D'Arcy W. Thompson, whose subject is 

 " Shells." 



The death is announced at seventy-four 

 years of age of Professor J. G. Darboux, per- 

 manent secretary of the Paris Academy of Sci- 

 ences and professor of mathematics at the 

 Sorbonne. 



R. H. TiDDEMAN, from 1864 to 1902 geologist 

 of the British Geological Survey, died on Feb- 

 ruary 11, at the age of seventy-five years. 



