SCIENC 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



Editorial Committee : S. Newcomb, Mathematics ; E. S. Woodward, Mechanics ; E. C. Pickering, 

 Astronomy ; T. C. Mendenhall, Physics ; R. H. Thurston, Engineering ; Ira Eemsen, Chemistry ; 

 Charles D. Walcott, Geology ; W. M. Davis, Physiography ; Henry F. Osborn, Paleon- 

 tology ; W. K. Brooks, C. Hart Merrtam, Zoology ; S. H. Scudder, Entomology ; C. E. 

 Bessey, N. L. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bow- 

 ditch, Physiology ; J. S. Billings, Hygiene ; William H. Welch, Pathol- 

 ogy ; J. McKeen Cattell, Psychology ; J. W. Powell, Anthropology. 



Friday, September 13, 1901. 



CONTENTS : 



The American Association for the Advancement of 

 Science : — 

 The Carnegie Technical School : Chancellor 



John A. Brashear 385 



Section A, diathematics and Astronomy; Pro- 

 fessor G. A. Miller , 393 



On the Stability of Vibrations : PROFESSOR Carl 

 Barus 403 



The Fifth International Zoological Congress : J. P. 

 McM 405 



Scientific Books : — 



Annals of the Astrophysical Observatory of the 

 Smithsonian Institution : Dr. C. E. Menden- 

 hall. Sheldon on Dynamo-electric Machinery : 

 Professor Dugald C. Jackson 407 



Discussion and Correspondence : — 

 A New Field for Kites in 3Ieteorology : Pro- 

 fessor A. Lawrence Eoth 412 



Graduate Courses in Science ■ DR. George B. 

 Germann 413 



Prize Subjects in Applied Science 420 



Scientific Notes and News.... 421 



University and Educational News 424 



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

 for review should be sent to ttie responsible editor, Pro- 

 fessor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



THE CARNEGIE TECHNICAL SCHOOL* 

 It was the intention of your vice-presi- 

 dent to prepare an address on the Evolution 

 of the Mechanics of the Telescope for pre- 

 * Address of the vice-president and chairman of 

 Section D, Mechanical Science and Engineering, of 

 the American Association for the Advancement of 

 Science, Denver meeting, August, 1901. 



sentation before Section D of this Associa- 

 tion, but a new and important theme has 

 been brought before me by reason of intimate 

 association therewith, and to which a num- 

 ber of the members of this Section have 

 contributed most valuable data. I there- 

 fore beg to present to you a few notes upon 

 this subject, namely, the technical school 

 for which Mr. Andrew Carnegie has most 

 generously proposed to furnish the means 

 to build, equip and endow in the city of 

 Pittsburg. When Mr. Carnegie gave to the 

 city its library, its art gallery, its temple of 

 music and its museum, neither the donor 

 nor the citizens had the remotest dream of 

 what they would develop into, nor how far 

 their influence would reach and be felt. I 

 need not tell you what potent factors these 

 institutions have been as educators in the 

 realms of art, science and literature. Suf- 

 fice it to say, that every department of the 

 great institute has proved itself worthy of 

 its name and is doing marvelous work for 

 the betterment of the people. So marked 

 has been this development during the six 

 years of the existence of the Pittsburg In- 

 stitute that Mr. Carnegie has given over 

 three million dollars to enlarge its bounda- 

 ries and increase its influence. 



But Mr. Carnegie had promised even 

 greater things for the city of his adoption. 

 He knew as well as any man the need, the 

 great value of a school of technology in 



