August 3, 1917] 



SCIENCE 



111 



" American Year Book," succeeding Professor 

 E. B. Wilson, who was recently appointed head 

 of the department of physics in the Massachu- 

 setts Institute of Technology. 



David Wendell Spence, for twenty-seven 

 ■ years a professor of civil engineering, and for 

 the past ten years dean of the school of engi- 

 neering and professor of civil engineering in 

 the Texas College, died at Galveston on 

 June 28. 



Dr. Charles Baskerville, professor of chem- 

 istry in the College of the City of 'New York, 

 has been appointed by the Eamsay Memorial 

 Committee to organize a committee in the 

 United States for receiving subscriptions to 

 the fund from Americans. 



Lord Crewe has accepted the invitation to 

 become chancellor of the University of Shef- 

 field, in succesion to the late Duke of Norfolk. 



UNIVERSITY AND EDUCATIONAL 

 NEWS 



Announcement is made that a gift of $50,- 

 000 from George W. Brackenridge of San 

 Antonio, Tex., will enable Colimibia Uni- 

 versity to open its doors to women students 

 this autumn. Work will be begun at once 

 on the addition to the present building to 

 provide extra laboratory facilities in the de- 

 partments of chemistry, pharmacology, pa- 

 thology and bacteriology. 



Professor Benjamin T. Marshall, of Dart- 

 mouth College, has been appointed president 

 of Connecticut College for Women at New 

 London, to succeed President Frederick 

 Sykes. 



Dean W. G. Eaymond, head of the College 

 of Engineering of the State University of 

 Iowa, has declined the presidency of the Colo- 

 rado school of mines situated at Golden, 

 Colo. 



Dr. Hugh McGuigan, professor of pharma- 

 cology in the Northwestern University, has 

 accepted the position of professor and head 

 of the department of pharmacology, materia 

 medica and therapeutics in the college of 

 medicine of the University of Illinois. 



Dr. H. E. Crosland of the department of 

 psychology of the University of Minnesota, 

 has been elected assistant professor of psy- 

 chology in the University of Arkansas. 



DISCUSSION AND CORRESPONDENCE 



REPLY TO DR. ERLANGER 



On p. 384 et seq., Vol. XLV, of this journal 

 Dr. Erlanger criticizes an abstract of my 

 paper which he did not stop to hear and which 

 is not yet published. 



Dr. Erlanger completely misses the point of 

 my paper and somewhat radically changes 

 some statements in his own paper.^ 



Dr. Erlanger stated that the pressure os- 

 cillations are in direct numerical ratio to the 

 manometer pressures in the compression cham- 

 ber; I showed that the ratio is determined by 

 the barometric plus the manometric pressure 

 —i. e., Boyle's Law. 



He says:- 



Inasmuch as the volume of incompressible fluid 

 entering the artery is practically the same through- 



^.qe^ fxj Wie 'pu.lsr 



Fig. 1. 



out the diastolic-systolie range of compression 

 and since at this time, as premised above, the com- 

 pression pressure is nearly tivice that which ob- 

 tained at D, the pressure in the compression cham- 

 ber will be raised almost twice as high by the 



1 Erlanger, Am. Jour. PhijsioJ., 1916, 5XXIX., 

 401. 



= Loc. cit., 409. 



