SCIENCE 



Feidat, April 21, 1911 



CONTENTS 

 Some Factors in the Institute's Success: 

 President Eichabd C. Maclaurin 593 



Henry Pichering Botvditch: Professor Chas. 

 S. MiNOT 598 



Samuel Franklin Emmons : DR. F. L. Kansome 601 



The Congress on Technology 604 



Scientific Notes and News 606 



University and Educational News 609 



Discussion and Correspondence: — 



The Meaning of Vitalism: Professor Ar- 

 thur O. LovEJOY. Productivity of Soils: 

 Professor F. H. Kino. A Kinetic Theory 

 of Gravitation: Professor William Kent. 

 What is the Genotype of X-TJs Jones, 1900: 

 Dr. C. W. Stiles 610 



Scientific Books: — 



Stevens and Hall's Diseases of Economic 

 Plants: W. A. Orton. Harper's Prelimi- 

 nary Beport on the Peat Deposits of 

 Florida: Dr. Edward W. Berry 216 



Notes on Entomology : Dr. Nathan Banks. . 623 



Special Articles: — 



Protective Enzymes: Dr. Mel T. Cook, H. 

 P. Bassett, Firman Thompson, J. J. Tadb- 

 enhaus. The Relation of Permeability 

 Change to Cleavage, in the Frog 's Egg : 

 J. F. McClendon. The Bacteriology of 

 "Tdtte Melk" : Dr. P. S. Heinemann. 

 Permian Reptiles: Professor S. W. Wil- 

 liston 624 



Societies and Academies: 



The Philosophical Society of Washington: 



R. L. Paris 632 



MSS. intended for publication and books, etc., intended for 

 review should be seat to the Edito? of Soibkck, GsTrison-on- 

 Hudson. N. Y. 



SOME FACTORS IN THE INSTITUTE'S 

 SUCCESS 1 



It is fifty years to-day since Governor 

 Andrew signed the charter of the Massa- 

 chusetts Institute of Technology. There 

 are many in the community who have 

 watched the growth of this institute ever 

 since. The dean of those who have been 

 intimately associated with its government 

 is Mr. "William Endicott — a tireless worker 

 in its interest. He writes to express regret 

 that he can not be with us to-day, on ac- 

 count of a recent family bereavement, and 

 adds: "It has been one of the greatest 

 pleasures of my life to watch the Tech's 

 triumphant progress from small beginnings 

 to its present assured position as one of the 

 leading scientific institutions of the world. ' ' 

 In spite of (perhaps, because of), its youth, 

 and in spite of (if not because of) its 

 earlier struggles and difficulties, it is now 

 absolutely in the front rank — a recognized 

 leader in its chosen field, held in respect 

 and honor everywhere. Why this conspicu- 

 ous success? It is a question that has 

 often been discussed in the reports of com- 

 missioners and other distinguished visitors 

 from abroad, and in the councils of educa- 

 tors at home. Many are the explanations 

 offered — the earnestness and devotion of 

 the faculty, the spirit and energy of the 

 students, the loyalty and organization of 

 the alumni, the completeness of its equip- 

 ment, the number and distinction of its 

 instructors, the variety of its courses, the 

 thoroughness with which the students' 



' Address by the president of the Massachusetts 

 Institute of Technology at opening of the Congress 

 of Technology, April 10. 



