628 



SCIENCE. 



[N. S. Vol. II. No. 45. 



psychology in America, should claim in an edi- 

 torial article in the last number of The Ameri- 

 can Journal of Psychology that he has accom- 

 plished nearly everji:hiug. The scientific and 

 academic growth of psychology in America dur- 

 ing the past fifteen years has been notable, but 

 the cause must be sought chiefly in the progress 

 of science as a whole and the sharper difieren- 

 tiation of psychology from the other sciences. 

 Even those who have done the most are repre- 

 sentatives of such a movement, not causes of it. 

 In the article in question it is stated that "under 

 the influence of these men [those who re- 

 ceived their training under President Hall] 

 departments of experimental psychology and 

 laboratories were founded at Harvard, Yale, 

 Philadelphia, Columbia, Toronto, Wisconsin 

 and many other higher institutions of learn- 

 ing." Professor James introduced experi- 

 mental psychology at Harvard University, 

 Professor Ladd at Yale University and Pro- 

 fessor Baldwin at the University of Toronto, 

 and their names do not appear on President 

 Hall's list of former students. I began the 

 work at the "University of Pennsylvania with 

 the cooperation of Professor Fullerton (where 

 it is continued by one of our former students, 

 Professor Witmer), and at Columbia College 

 with the cooperation of Professor Butler. I 

 am glad to have had the privilege of studying 

 for four months under Dr. Hall at Johns Hop- 

 kins University, but I had previously studied 

 for two years under Lotze and Wundt and held 

 an appointment at Johns Hopkins University 

 for some months before Dr. Hall was called as 

 lecturer to that University. The other men 

 mentioned first on President Hall's list — Pro- 

 fessors Dewey, Jastrow (who began the work 

 at the only remaining university mentioned) 

 and Donaldson — were also members of Johns 

 Hopkins University before Dr. Hall. 



In the same editorial article it is stated that 

 The American Journal of Psychology wishes to 

 publish especially ' the results of experimental 

 investigations in psycho-physic laboratories,' an 

 ' Archiv function not yet represented by any 

 serial publication in this field in English.' It 

 is, however, easy to verify the fact that during 

 the past two years The Psychological Review has 

 published some forty-two experimental investi- 



gations in psychology whereas The American 

 Journal has published but twenty-seven. 



J. McKeen Cattell. 

 Columbia College. 



the kadiolaeian earths of cuba. 



To THE Editoe of Science : The occurrence 

 of Radiolarian earths in the land structure of 

 the West Indian region has been of special in- 

 terest to geologists, o-ning to the fact that they 

 probably represent profound organic sediments 

 of the deeper floor of the sea. The discovery 

 of these earths in Barbados and Trinidad had 

 excited wide interest, but little light had been 

 obtained upon the important question of their 

 geologic age. 



In my recent papers* on the geology of the 

 Island of Cuba, I have briefly described the 

 geology of some interesting beds of siliceous 

 earths which I collected from a locality in the 

 suburbs of the town of Baracoa, and personally 

 determined with the microscope to be composed 

 of radiolarian remains. Through the determin- 

 ations by Dr. Dall of fossils collected by me 

 fi'om the overlying strata, I was enabled to 

 point out the important fact that they occurred 

 immediately below strata containing fossils of 

 undoubted Miocene age, and published a figure 

 illustrating their geologic relations. 



I was not aware at the time of making this 

 publication that the existence of radiolarian beds 

 in Cuba, much less at this particular locality, 

 was known, as they are not mentioned in Pro- 

 fessor Crosby's paper,f the only one previous to 

 mine based on personal studies of the region. 



In an article on the geology of the Barbados 

 (to which Mr. J. W. Spencer has called my at- 

 tention) by Mr. A. J. Jukes-Browne, published 

 in the Quarterly Journal of the Geological So- 

 ciety of London for May 2, 1892, p. 221, the 

 following interesting paragraph occurs : 



"Cuba. — When this paper was read, Mr. J. 

 W. Gregory was able to announce, from the ex- 

 amination of rocks he had obtained ft-om Baracoa 

 in Cuba, that radiolarian earths existed in that 

 island ; he finds them to be similar in structure 



* American Journal of Science, September, 1894. 

 Notes on the Geology of the Island of Cuba. Based 

 upon a reconnoissance made for Alexander Agassiz, 

 Cambridge, Mass. 



t On the Elevated Coral Reefs of Cuba. Proo. Bos- 

 ton Society of Natural History, Vol. XXII., pp. 124- 

 129. 



