December 17, 1920] 



SCIENCE 



577 



center of one of the largest market garden 

 regions in the country, is at the port of entry 

 for most of our foreign plant importations, 

 and at the terminus for the largest domestic 

 shipments by rail of fruits and vegetables. 

 The plant disease problems in connection with 

 this commercial activity are many, and are of 

 the highest scientific interest as well as of 

 great economic importance. These facts have 

 been recognized by the Botanic Garden gov- 

 erning committee and other friends of the 

 garden, and a fund of fifty thousand dollars 

 has been subscribed to become available over 

 a period of four years from January 1, 1921. 

 It is the intention to give special emphasis 

 to the pure science phase of plant disease 

 problems. A curatorship of plant pathology 

 has been established, and it is planned to 

 erect an experimental greenhouse at an early 

 date. Dr. George Matthew Eeed, of the Office 

 of Cereal Investigations, Bureau of Plant In- 

 dustry, Washington, D. C, has been appointed 

 to the new curatorship beginning January 1, 

 1921. 



THE AMERICAN PHYSICAL SOCIETY 



The annual meeting (the 106th regular 

 meeting) of the American Physical Society 

 will be held in Chicago, on December 28, 29 

 and 30, 1920, in afiiliation with Section B — 

 Physics — of the American Association for the 

 Advancement of Science. The meetings will 

 be held in the lecture room of the Kent Chem- 

 ical Laboratory of the University of Chicago. 



The program of technical and scientific 

 papers, to be given on Tuesday and Thursday, 

 will be in charge of the Physical Society. On 

 Wednesday morning there will be a joint 

 session with the Optical Society of Amieriea. 



The session on the afternoon of Wednesday, 

 will be in charge of Section B, at which time 

 Professor Max Mason, the retiring vice-presi- 

 dent and chairman of Section B, will give 

 an address on " Prom Oersted to Einstein." 

 This will be followed by a symposium on 

 " Recent Progress in Magnetism " with papers 

 by S. J. Barnett, S. E. Williams and A. H. 

 Compton. 



Other meetings for the current season are 

 as follows: 



107. February 25-26, 1921. New York. 



108. April 22-23, 921. Washington. 



109. Time not determined. Pacific Coast 

 Section. 



Dayton C. Millek, 

 Secretary 

 Case School or Applied Science, 

 Cleveland, Ohio 



the mathematical association of 



AMERICA 



The fifth annual meeting of the Mathe- 

 matical Association of America and the sec- 

 ond annual meeting of Illinois section will 

 he held at the University of Chicago on Tues- 

 day and Wednesday, December 28 and 29, 

 1920, in afiiliation with the American Asso- 

 ciation for the Advancement of Science and 

 in connection with the western meeting of the 

 American Mathematical Society. The Illinois 

 section will meet jointly with the Association 

 in all its sessions, but will hold a separate busi- 

 ness meeting on Tuesday afternoon. 



On Wednesday evening at half past six 

 there will be a joint dinner at the Quadrangle 

 Club of all the mathematical organizations, 

 together with Section D (Astronomy) of the 

 American Association. 



The meetings will be held in Ryerson Phys- 

 ical Laboratory and in the physiological lab- 

 oratory. The former is situated near the 

 comer of 58th Street and University Avenue, 

 the latter is the southwest building of the 

 Hull Biological group near 57th Street. 



It is proposed that the Mathematical Asso- 

 ciation of America should emphasize in its 

 meetings the presentation of historical papers, 

 and to this end it welcomes the opportunity 

 to meet the newly organized Section L (His- 

 torical and Philological Sciences, including 

 the History of Science) of the American As- 

 sociation for the Advancement of Science in 

 two joint sessions for the reading of such 

 papers. It is also planned that the associa- 

 tion should encourage the presentation of ex- 

 pository papers of a fairly elementary char- 

 acter, and several such papers have been in- 

 cluded in this program. 



