July 17, 1908] 



SCIENCE 



67 



Use of Arrow-heads in Alternating- Cur- 

 rent Vector-Diagrams," by A. S. Langs- 

 dorf, professor of electrical engineering, 

 Washington University; "Segregation in 

 Steel Ingots," by Henry M. Howe, pro- 

 fessor of metallurgy, Columbia University. 



The other sessions of the meeting were 

 held in Cobb Hall in conjunction with Sec- 

 tion A, Mathematics, and the Chicago Sec- 

 tion of the American Mathematical Society. 

 For the joint sessions, invitations had been 

 sent to teachers of engineering and of 

 mathematics in the engineering colleges 

 and technical schools of the country, and 

 to professional engineers who, it was 

 thought, might be interested in the subject 

 of an engineering-mathematics symposium. 

 As a result, the attendance was large and 

 representative and included about one hun- 

 dred persons interested on the mathemat- 

 ical side, and over fifty teaching and prac- 

 tising engineers. Twenty-one privately 

 endowed, and twenty state-supported edu- 

 cational institutions were represented. 



The promotion of acquaintance and 

 personal knowledge was an important 

 factor in the success of the meeting, which 

 was in large part due to the labors and 

 foresight of Professor H. E. Slaught, of 

 the department of mathematics of the Uni- 

 versity of Chicago, and Secretary of the 

 Chicago Section of the American Mathe- 

 matical Society. 



A subscription dinner for engineers and 

 mathematicians and their friends brought 

 about one hundred persons together at 

 Hotel Del Prado on Monday evening, De- 

 cember 30. The speakers at the dinner 

 were introduced by E. B. Van Vleek, pro- 

 fessor of mathematics, University of Wis- 

 consin, Chairman of the Chicago Section of 

 the American Mathematical Society. They 

 were Calvin M. Woodward, dean of the 

 School of Engineering and Architecture, 

 Washington University, St. Louis, Mo. ; 

 Charles F. Scott, consulting engineer of 



the Westinghouse Electric & Manufactur- 

 ing Co., Pittsburg, Pa.; George F. Swain, 

 professor of civil engineering, Massachu- 

 setts Institute of Technology, Boston, 

 Mass. ; and Edward V. Huntington, assist- 

 ant professor of mathematics, Harvard 

 University, Cambridge, Mass. 



The first session of the engineering- 

 mathematics symposium was held on Mon- 

 day afternoon, December 30. Professor 

 Van Vleck acted as chairman. Four 

 papers were presented, as follows: 



The Present Condition of Mathematical 

 Instruction for Engineers in American 

 Colleges: Edgak J. Townsend, professor 

 of mathematics, University of Illinois. 



The Teaching of Mathematics to Engineer- 

 ing Students in Foreign Countries: 

 Alexander Ziwet, professor of mathe- 

 matics, University of Michigan. 



The Teaching of Mathematics for Engi- 

 neers: Chaeles F. Scott, consulting 

 engineer, Westinghouse Electric and 

 Manufacturing Co. 

 The Point of View in Teaching Engineer- 

 ing-Mathematics: Robert S. Woodward, 

 president of the Carnegie Institution of 

 Washington. 



The two sessions, held on the morning 

 and afternoon of December 31, were de- 

 voted to a symposium on the question: 

 "What is needed in the Teaching of 

 Mathematics to Students of Engineering? 

 (a) Range of Subjects; (&) Extent in the 

 Various Subjects ; (c) Methods of Prepara- 

 tion; {d) Chief Aims." The speakers 

 represented three phases of the subject, 

 namely: (a) From the standpoint of the 

 practising engineer; (&) from the stand- 

 point of the professor of engineering; (c) 

 from the standpoint of the professor of 

 mathematics in the engineering college. 



Professor Landreth and Professor 

 Slaught were the chairmen of the two 

 sessions. The speakers were as follows: 



