Mat 23, 1919] 



SCIENCE 



495 



geology, and Professor M. Ehle, department of 

 mining of the College of Mines and Engi- 

 neering. It will include geodetic and topo- 

 graphic surveying, mapping of areal geology, 

 making of geologic cross-sections, studying of 

 mines or prospects and undeveloped ore de- 

 posits, and making mine examinations and re- 

 ports. The region selected lies in the con- 

 nected Chirichua and Dos Cabezas Mountains, 

 fault-block ranges in southeastern Arizona. 

 The choice of the field was based upon the 

 varied structural features, diversity of forma- 

 tions and their great range in age, rich in 

 metallization and mining development, ideal 

 summer climate, fine camping sites, and ac- 

 cessibility. Maps and bulletins covering the 

 area worked will be prepared by the professors 

 in charge and will be published by the Arizona 

 Bureau of Mines. Such students as are espe- 

 cially well prepared may collaborate on reports, 

 and data secured may also be worked up into 

 theses. The university will furnish a full 

 field equipment, including housing, camp cook, 

 surveying instruments and conveyances. The 

 class is limited to sixteen, and is open to stu- 

 dents of all universities and colleges who have 

 had at least a course in physical and historical 

 geology and mineralogy. Applications should 

 be received by June 1. For further informa- 

 tion address the director, Arizona Bureau of 

 Mines, Tucson, Arizona. 



UNIVERSITY AND EDUCATIONAL 



NEWS 

 We learn from Mature that Mr. Lawrence 

 Philipps has oifered University College, 

 Aberj'stwyth, the siun of £10,000 to found a 

 plant-breeding institute for Wales in connec- 

 tion with the agricultural department of the 

 college. lie has guaranteed a further sum of 

 £1,000 per annum for ten years towards the 

 maintenance of the institution. The gov- 

 ernors of the college have appointed Mr. R. G. 

 Stapleton, who was for some years connected 

 with the college as advisory botanist, to a 

 chair of agricultural botany and to the direc- 

 torship of the new institution. 



The first school of practical forestry in 



Scotland has beem opened at Bimam, in 

 Perthshire. The school building that has been 

 erected at Birnam is itself an example of 

 what can be done in forestry, being entirely 

 built of home-grown wood. At present the 

 school has twelve students. The course will 

 cover two years and will consist of both prac- 

 tical work and lectures. The Duke of Athol 

 has placed his woodlands at the board's dis- 

 posal for practical instruction and the aim of 

 the school is both provision of technical in- 

 struction and the furnishing of openings for 

 discharged service men. 



William D. Ennis, who has since his re- 

 lease from military service been acting pro- 

 fessor of mechanical engineering at Columbia 

 University, has been appointed professor in 

 marine engineering in the post-graduate de- 

 partment of the United States Naval 

 Academy. 



Dr. Tobias Dantzig and Dr. G. A. Pfeiffek 

 have been appointed instructors in matlie- 

 matics at Columbia University. 



Dr. James DRE^•ER has been appointed 

 Coombe lecturer in psychology at the Uni- 

 versity of Edinburgh. 



Professor F. Soddy, F.R.S., of the Uni- 

 versity of Aberdeen, has been elected to the 

 second chair of chemistry recently established 

 in the Universitj- of Oxford. 



DISCUSSION AND CORRESPONDENCE 



ON THE AURORAL DISPLAY OF MAY 2, 1919 



To the Editor of Science : The following ob- 

 servations of the auroral flash visible in Wash- 

 ington on the nights of May 2 and 3, 1919 and 

 observed by us between the hours of 3 :30 a.m. 

 and 5 a.m. may be of sufficient interest for rec- 

 ord. There is one point mentioned later which 

 to us seemed very striking. 



The general appearance of the phenomenon 

 reminded one of a searchlight display. The 

 streaks of lighted sky were at times very simi- 

 lar to the streaks of diffused light along the 

 paths of searchlight beams. The brightness of 

 the auroral streaks was comparable in bright- 

 ness to that of the path of the searchlight beam 

 on clear nights when seen from a great dis- 



