832 



SCIENCE. 



[N. S. Vol. VII. No. 18U 



mour Institvite of Technology, Chicago. He 

 had previously given the Institute an endow- 

 ment of $1,600,000. 



Me. Washington Duke has given $100,000 

 to Trinity College, Durham, N. C, which 

 makes the total amount of his gifts to the Col- 

 lege $425,000. 



De. D. K. Peaesons, who has assisted so 

 many smaller colleges, has oflfered to give the 

 Salt Lake College, of Salt Lake, Utah, $50,000, 

 on condition that its oflBcers raise $100,000 more 

 ■within a year. 



De. Geoege W. Hill has been appointed 

 lecturer in celestial mechanics in Columbia 

 University, Miss Catherine W. Bruce having 

 given §5,000 for this purpose. 



Professoe I. J. Macomeee, of Cornell Uni- 

 versity, has been appointed professor of elec- 

 trical engineering in the Armour Institute of 

 Technology, Chicago. 



De. C. B. Bessey, of the University of Ne- 

 braska, will give a course of fifteen lectures on 

 botany in the Texas-Colorado Chautauqua, 

 Boulder, Col., in July and August. 



Of the twenty fellowships annually awarded 

 at Johns Hopkins University, the following 

 were in science : Joseph Scudder Chamberlain, 

 of Ames, la., S.B., Iowa Agricultural College, 

 1890, chemistry ; Percy Millard Dawson, of 

 Montreal, Canada, A.B., Johns Hopkins Uni- 

 versity, 1894, and M.D., 1898, physiology; 

 George Stronach Fraps, of Ealeigh, N. C, S.B., 

 North Carolina Agricultural College, 1896, 

 chemistry ; Leonidas Chalmers Glenn, of Crow- 

 der's Creek, N. C, A.B., University of South 

 Carolina, 1891, geology ; Caswell Grave, of Mon- 

 rovia, Ind., S.B., Earlham College, 1895, 

 zoology ; George Oscar James, of Bowers Hill, 

 Va., A.B., Johns Hopkins University, 1895, 

 mathematics ; Joseph Francis Merrill, of Rich- 

 mond, Utah, S.B., University of Michigan, 

 1893, physics ; Eugene Lindsay Opie, of Balti- 

 more, A.B., Johns Hopkins University, 1893, 

 and M.D., 1897, pathology; Frederick Albert 

 Saunders, of Ottawa, Canada, A.B., University 

 of Toronto, l^^ti, physics. 



The following are among the twenty-four 

 University fellowships awarded in Columbia 



University: E. L. Firth, C. E., Cornell Uni- 

 versity, 1895 ; Columbia University, 1898, 

 sanitary engineering; G. B. German, A.B., 

 Columbia College, 1895, assistant in mathemat- 

 ics, 1895-98, education ; E. Hagen, University 

 of Vermont, 1897, Columbia University 

 Scholar in Botany 1897-98, botany; O. B. 

 Huntsman, A.B., Harvard University, 1897-98 ; 

 philosophy; J. D.Irving, A.B., Columbia Col- 

 lege 1896, Columbia University Fellow in 

 Geology 1897-98, geology; E. Kasner, B.S., 

 College of the City of New York 1896, A.M., 

 Columbia University 1897, University Fellow 

 in Mathematics 1897-98, mathematics; W. C. 

 Kretz, A.B., Columbia College 1896, A.M., 

 Columbia University 1897, University Scholar 

 in Astronomy 1897-98, astronomy ; J. W. Mil- 

 ler, Jr. B.S., Pennsylvania State College, 1897, 

 mechanics; F. C. Paulmier, B.S., Princeton 

 University 1894, M.S. 1896, Graduate Student 

 at Columbia University 1896-98, zoology ; F. 

 J. Poyse, A.M., Queen's University, Kingstown, 

 Canada 1898, Graduate Student at Columbia 

 University 1897-98, chemistry; R. S. Wood- 

 worth, A.B., Amherst College, 1891; A.B., 

 Harvard University 1896 and A.M. 1897 ; 

 Assistant in the Physiological Laboratory of 

 Harvard University 1897-98, psychology. 



DISCUSSION AND CORRESPONDENCE. 

 COLOR VISION. 



Theee are certain points in Mrs. Ladd Frank- 

 lin's letter of June 3d that call for comment. 



1. Mrs. Ladd Franklin sharply criticises me 

 for having termed the Helmholtz theory a 

 ' three-fibre ' theory. The offence, if committed, 

 would not be heinous. The phrase ' Dreifaser- 

 theorie ' is current in German monographs, and 

 is a convenient, if not strictly accurate, designa- 

 tion of the tricomponent theory. As a matter 

 of fact, however, there is no single passage in 

 my letter in which I characterize that theory as 

 a three-fibre theory ! 



In mentioning von Kries' double-white pro- 

 cess I added, in explanatory parenthesis, the 

 words ' one-fibre white and three-fibre white.' 

 I did this because I supposed that the lay reader 

 might be troubled by the preceding phrase, and 

 because I had found the terms valuable in my 



