SCIENCE 



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 ; K. S. Woodward, Mechanics ; E. C. Pickering, 

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

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

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

 Bessey, N. I-. 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, November 29, 1901. 



CONTENTS : 



The Relation of Yale to Medicine : Professor 

 WiLLiABi Henry Welch 825 



Varietal Mutation in the Tomato : DR. C. A. 

 White 841 



Scientific Books : — 



Bather on Echinoderms : PROFESSOR C. E. 

 Beecher. Overton's Studien iiber die Nnrcose : 

 Dr. S. J. Meltzer. Thomas's Les matieres 

 colorantes naturelles : PROFESSOR Marston 

 Taylor Bogert. Ffefer's Pflanzenphysiolo- 

 gie: Dr. D. T. MacDougal 844 



Scientific Journals and A rticles 847 



Societies and Academies : — 



The American Physical Society : PROFESSOR 

 Ernest Merritt. The Biological Society of 

 Washington : T. W. Stanton. The Torrey 

 Botanical Club : PROFESSOR Edward S. Bur- 

 gess. The Science Club of the University of 

 Wisconsin : L. S. Sbhth. The Scientific As- 

 sociation of the University of 3Iissouri : Dr. 

 Charles Thom. The Academy of Science of 

 St. Louis: Professor William Trelease.... 848 



Discussion and Correspondence : — 



The Python in Pennsylvania : E. L. MOSELEY.. 852 



Shorter Articles: — 



The Unexplained Southerly Deviation of Falling 

 Bodies : PROFESSOR Florian Cajori. Astig- 

 matic Images of the Bottom of a Pool of Water : 

 Professor Francis E. Nipher 853 



Notes on Inorganic Chemistry: J. L. H 855 



Current Notes on Physiography : — 



The Biver System of Connecticut ; Lake Winni- 

 peg ; A Piedmont Lake in Bavaria : W. M. 

 Davis - 856 



Thermodynamics of the Gas Engine : Professor 

 R. H.Thurston 859 



The Neiv Star in Perseus 860 



The U. S. Naval Observatory 861 



Scientific Notes and News 861 



University and Educational Ne^vs 864 



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

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

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



TRE RELATION OF YALE TO 3IEDICINE* 



On this fourth jubilee of Yale University, 

 speaking, as I trust I may, in behalf of 

 many hundreds of physicians who have re- 

 ceived their liberal or professional educa- 

 tion in this institution, I bring affectionate 

 greetings to our alma mater, and offer our 

 hearty congratulations on this happy anni- 

 versary. With all the sons of Yale we join 

 in the prayer of President Stiles : ' Peace 

 be within thy walls, O Yale, and prosper- 

 ity within thy palaces.' 



Yale is related to medicine most directly 

 through her medical department, but also 

 through all who have studied here and sub- 

 sequently practiced the art or cultivated 

 the science of medicine. The Medical 

 School, although the first department added 

 to the College, was not established until 

 over a hundred years after the foundation 

 of the Collegiate School at Saybrook. From 

 the beginning, however, graduates of the 

 College are to be found in the ranks of med- 

 ical practitioners, and any account of the 

 relation of Yale to medicine would be most 

 incomplete without some consideration of 

 the alumni of the eighteenth century who 

 were physicians. Their history makes a 

 large part of the medical history of Connec- 

 ticut during that century, but it is not lim- 

 ited to this State. 



* An address delivered October 21, 1901, at the two 

 hundredth anniversary of the founding of Yale College. 



