CIE 



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



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE 



Friday, August 23, 1907 



CONTENTS 



Valedictory Address to the Graduating Class 

 of Jefferson Medical College: Pbofessoe 

 Geoege S. Huntington 233 



The Thirty-sixth General Meeting of the 

 American Chemical Society: B. E. Cuebt 237 



Scientific Books: — 



Drew's Invertebrate Zoology: Pkofessoe J. 

 S. KiNGStET. Walsh's Makers of Modem 

 Medicine : De. W. G. MacCallum 250 



Scientific Journals and Articles 251 



Discussion and Correspondence: — 



Stohr's Text-look of Histology: De. Feed- 

 EEic T. Lewis. Seismotectonic Lines and 

 Lineaments: Peofessoe Wm. 'H. Hobbs. 

 Railway Signals: Peofessoe Geoege M. 

 Steatton 252 



Special Articles: — 



Diemictylus or Notophthalmus as Names of 

 a Salamander: De. Theo. Giix. A New 

 Rhythm and Time Device: Peofessoe 

 Knight Dunlap. 0?i Quinine Sulphate 

 and Human Blood: De. Thomas M. Wil- 

 son 256 



Botanical Notes:— 



Farm Botany; Fossil loica Plants; Our 

 Forest Reserves; History of American Bot- 

 any ; South Dakota Conifers; Seeds of 

 Common Grasses; A Tropical School of 

 Botany; Dr. Maxwell T. Masters; Pro- 

 gressus Rei Botanicce ; New Edition of 

 Campbell's Botany; Experiments on the 

 Influence of Light: Peofessoe Chaeles E. 

 Bessey 258 



The Concilium Bibliographicum: Peofessoe 

 Heney Fairfield Osboen 260 



The British Association's Grants for Scien- 

 tifie Research 261 



Scientifio Notes and News 261 



University and Educational News 263 



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

 reTiew should be sent to the Editor of Science, Garrison-on- 

 Hudson, N. Y. 



VALEDICTORY ADDRESS TO THE GRADU- 

 ATING CLASS OF THE JEFFERSON 

 MEDICAL COLLEGE, PHILA- 

 DELPHIA, JUNE 3, 1907 



I HAVE been honored by the request of 

 your institution to pi'onounee the valdie- 

 tory address to the members of this year's 

 graduating class, and it appears to me that 

 I can best perform my duty by taking full 

 advantage of the position which I occupy 

 towards you and your alma mater. As 

 you know the outsider sees most of the 

 game, and coming before you as a stranger 

 from a sister institution, keenly interested 

 in the progress and development of medi- 

 cal science and medical teaching in our 

 country, I can speak to you all the more 

 freely and frankly of your relation to your 

 academic foster-mother, of the value of the 

 heritage which she to-day bestows on you, 

 and of your obligations to her, present, 

 past and future. 



It is almost a misnomer to speak of a 

 valedictory address to a class of gradua- 

 ting medical men. It is true that in one 

 sense, the purely physical and narrow 

 aspect, this day marks a profound change 

 in your professional careers. You are 

 about to close one chapter of a continued 

 story. You bid good-bye to the lecture 

 rooms and laboratories, to the hospitals 

 and clinics in which you have received 

 your preliminary training, and to the men 

 who guided and directed your studies. 

 And in turn, this venerable and honorable 

 seat of medical teaching and learning, a 

 landmark in the educational development 



