October 9, 1914] 



SCIENCE 



519 



take refuge in England. Special arrangements 

 ■will be made as far as possible to meet the 

 needs of Frencb and Belgian students who 

 desire to continue their studies in London. 



Professor Frank H. Constant, formerly of 

 the University of Minnesota, becomes head of 

 the department of civil engineering at Prince- 

 ton University, succeeding Professor Charles 

 McMillan, who has retired and been elected 

 professor emeritus. 



John E. Bucher, associate professor of 

 chemistry at Brov?n University, has been pro- 

 moted to be head of the chemistry department 

 to fill the vacancy caused by the retirement of 

 Professor John H. Appleton. Dr. Harold 

 Bigelow, of Mount AUiston University, is 

 added to the faculty as assistant professor of 

 chemistry. 



Dr. Charles Alton Ellis, formerly of the 

 University of Michigan, and recently engaged 

 as a practising engineer, has been appointed 

 assistant professor of civil engineering in the 

 University of Illinois. 



Dr. E. Hatnes, of the Lick Observatory, 

 has been made associate professor of astron- 

 omy at Beloit College and director of the 

 Smith Observatory. 



J. Crosby Chapman, B.A. (Cambridge), 

 D.Sc. (London), Ph.D. (Columbia), has been 

 elected assistant professor of experimental 

 education of Western Reserve University. 



Among the new faculty appointments at 

 Oberlin College the more important are the 

 following: Dr. H. N. Holmes as professor of 

 chemistry and head of the department. Dr. 

 Holmes received his A.B. from Westminster 

 College in 1899 and the doctorate from Johns 

 Hopkins in 190Y. He comes to Oberlin from 

 Earlham to succeed Professor Allen W. C. 

 Menzies who goes to Princeton. Dr. H. A. 

 Miller has been made professor of sociology 

 and head of the department. Dr. Miller re- 

 ceived his A.B. from Dartmouth in 1899 and 

 his Ph.D. from Harvard in 1905. He comes 

 from Olivet College. Dr. George E. Wells is 

 promoted to be associate professor of psychol- 

 ogy and Dr. E. M. Kitch enters the depart- 

 ment of philosophy as associate professor after 



two years of study in the University of Chi- 

 cago. 



Changes in the scientific staff of the Uni- 

 versity of Idaho have been made as follows: 

 Dr. Chester Snow, associate professor of 

 mathematics; Dr. John J. Putnam, associate 

 professor of bacteriology, in charge of the de- 

 partment; Associate Professor C. W. Hick- 

 man, department of animal husbandry; Mr. 

 Newell S. Eobb, in charge of the department 

 of agronomy; Assistant Professor 0. W. 

 Holmes, department of dairying; Professor 

 C. E. Coolidge, mechanical engineering; Pro- 

 fessor A. M. Winslow, civil engineering, and 

 Mr. L. W. Currier, metallurgy and geology 

 department. 



Mr. Stanley F. Brown and Dr. Wm. M. 

 Thornton, Jr., have been appointed tutors in 

 the department of chemistry. College of the 

 City of New York. 



Dr. J. E. EowE, of Dartmouth College, has 

 been appointed assistant professor of mathe- 

 matics in the Pennsylvania State College. 



Professor R. H. Yapp has been appointed 

 professor of botany in the Queen's University, 

 BeHast. 



Mr. L. J. GoLDSwoRTHY has been appointed 

 professor of chemistry at the Victoria College 

 of Science, Nagpur. 



DISCUSSION AND COEBESPONDENCB 



AN EXPERIMENT ON KILLING TREE SCALE BY 

 POISONING THE SAP OF THE TREE 



I HAVE in my grounds a plant of Spanish 

 broom about a dozen years old and with a 

 trunk about four inches in diameter which has 

 for several years been seriously infested by 

 cottony cushion scale (Icerya purchasi). I 

 have tried various sprays, have put scale-eating 

 beetles on the tree and at one time cut all 

 the branches off and sprayed the trunk several 

 times in the attempt to get permanently rid of 

 this scale, but up to last winter it seemed that 

 all attempts were in vain. In February of 

 this year, when the broom was very thickly 

 covered with the scale I bored a § in. hole in 

 the trunk to a depth of about three inches, 

 filled the hole nearly full of crystals of potassic 



