Mat 6, 1921] 



SCIENCE 



435 



The June issue of the Medical Review of 

 Reviews will be a special radium number, 

 dedicated to Mme. Curie. The issue will 

 consist exclusively of articles on radium and 

 its uses. 



As Professor A. Netter of the University of 

 Paris soon reaches the retirement age, his 

 friends and pupils are planning to present 

 him with a testimonial plate. 



Eight professors of the College of Agricul- 

 ture of Cornell University will be on sab- 

 batic leave next year. They are Professors 

 Herbert H. Whetzel, George W. Cavanaugh, 

 Ralph S. Hosmer, Karl M. Wi^and, Arthur 

 B. Eeckuagle, Blanche Hazard, Anna B. 

 Comstock and Earl W. Benjamin. Professor 

 Whetzel will organize a plant pathology 

 service for the Bermuda Islands. Professor 

 Hosmer will make a study of the forests of 

 England, France, Switzerland, Sweden and 

 Norway. Dr. Benjamin will act as general 

 manager of a poultry-producing firm in New 

 Jersey, making efficiency and cost studies. 



The department of medical zoology of the 

 school of hygiene and public health of the 

 Johns Hopkins University has recently ar- 

 ranged to send during the summer of 1921 an 

 expedition to Porto Rico for the purpose of 

 studying the malaria problem and other prob- 

 lems involving disease-producing protozoa and 

 their vectors. Dr. R. W. Hegner will devote 

 his time especially to the study of the malarial 

 organism and other blood-inhabiting protozoa 

 and to the intestinal protozoa, and Dr. F. M. 

 Root, who will accompany him, will make a 

 survey of the mosquitoes, ileas and other dis- 

 tributors of pathogenic microorganisms. 



Walter L. Howard, professor of pomology 

 in the University of California, now in charge 

 of the new Deciduous Fruit Experiment Sta,- 

 tion at Mountain View, California, has been 

 granted a year's leave of absence to make a 

 study of root stocks for deciduous fruits. 

 Accompanied by his family, he will sail from 

 New York to Europe on June 25, going 

 direct to Angers, France. The field of study 

 will include France, Italy, Spain and England. 



Under the auspices of the General Electric 

 Company and Union College, Professor F. K. 

 Richtmyer, of the Department of Physics at 

 Cornell University, has given in Schenectady, 

 during the present academic year, a course of 

 lectures on modern physical theories. 



On April 7, Professor Edward Kasner, of 

 Colmnbia University, lectured on " Einstein's 

 theory of gravitation" at the. College of the 

 City of New York. Professor Einstein at- 

 tended and took part in the discussion. 



, Dr. George H. Parker, head of the depart- 

 ment of zoology at Harvard University, is in 

 residence at Pomona College as Harvard ex- 

 change professor, from April 11 to May 6, 

 giving two courses of lectures, on " The ori- 

 gin of the nervous system " and " Smell, taste 

 and allied senses." 



Professor Harris J. Ryan, of Leland Stan- 

 ford Junior University, sjwke on April 20 

 before the Physics Club of the California In- 

 stitute of Technology and the Mount Wilson 

 Observatory on : " High voltage phenomena 

 encountered in the study of the insulation 

 requirements' for the proposed 220,000 volt 

 power transmission lines." 



On April 23 Dr. Dayton C. Miller, head of 

 the department of physics, Case School of 

 Applied Science, and secretary of the Ameri- 

 can Physical Society, gave an experimental 

 lecture upon "Photographing and analyzing 

 sound waves." 



Dr. Harvey R. Gaylord, director of the 

 New York State Institute for Research in 

 Malignant Diseases, and Dr. Charles Cary, of 

 Buffalo, left for Germany on April 23 to in- 

 vestigate methods developed in Germany for 

 applying X-rays to cancer. 



James Zetek, formerly entomologist to the 

 Panama Canal, has been appointed specialist 

 in tropical insects with the Federal Horticul- 

 tural Board, U. S. D. A., in charge of the 

 temporary field station at Ancon, Canal Zone, 

 Panama. 



Dr. Paul E. Klopsteg, who has been con- 

 nected with the sales and advertising depart- 

 ment of Leeds and Northrup for several years, 



