AlGlST 21, 1903.] 



SCIENCE. 



239 



ing the tendency to develop this border 

 province of the science. Out of this tend- 

 ency, well stimulated in individual in- 

 stances in previous j'ears, has come a per- 

 fection and an extension of the more spe- 

 cific and exact modes of experimentation 

 which prepared the way for the most satis- 

 factory era of a definite comparative psy- 

 chologj', and a wider dependence upon the 

 conceptions underlying a thoroughgoing 

 application of the genetic method. 



Of the un.spoken years I am unable to 

 specify accentuated activities, so even must 

 have been the tenor of their waj'. Nor can 

 one with ease put his finger upon the date 

 of the introduction of the scientific method 

 in those lines of interest in i-eligion, in 

 esthetics and in other higher manifesta- 

 tions of mind, which are enabling us to 

 give a truer picture of the life-history of 

 the soul, and which are now so well marked 

 in their developments. 



The deeennium is also distinguished by 

 the literary freedom and activity exhibited 

 by our writers of treatises and text-books. 

 I have not made it a part of my task to 

 collect a summary of all the material avail- 

 able in this direction, but remained satis- 

 fied with an enumeration of some of the 

 more important works which have appeared 

 and which show in a different way the drift 

 of the tendencies among us. In 1893 ap- 

 peared iliss Shinn 's ' Notes on the Develop- 

 ment of a Child' (parts 1 and 2) and 

 Tracy's 'The Psychology of Childhood.' 

 The year 1894 saw the appearance of 

 Ladd's 'Psychology Descriptive and Ex- 

 planatory' and Marshall's 'Pain, Pleasure, 

 and .Esthetics.' The first is.sue of 'The 

 Psychological Index' was in 1895. It con- 

 tained 1,312 entries, representing chiefly 

 the bibliography, for the year preceding, 

 of the literature of psychology and cognate 

 subjects. Its latest issue, No. 8, for the 

 year 1901, entered 2,985 titles. The fol- 



lowing books also show the marked features 

 of this year: Donaldson's 'The Growth of 

 the Brain,' Stanley's 'Studies in the Evo- 

 lutionary Psychologj- of Feelings' and 

 Baldwin's 'Mental Development in the 

 Child and the Race,' which was the begin- 

 ning of a series of characteristic studies 

 only now completing them.selves. Ladd's 

 'Philosophy of Mind,' though treating of 

 ultra-psychological questions, may also be 

 mentioned as completing a unique trilogy 

 on the soul. The year 1896 was fruitful 

 in the following ways: Cope's 'The Pri- 

 mary Factors of Organic Evolution' had 

 great value for the psychologist's problem 

 of consciousness in evolution. The grow- 

 ing problems of social p.sychology received 

 marked conti-ibutions in the work of Gid- 

 dings, ' The Principles of Sociology. ' And 

 Baldwin's 'Dictionary of Philosophy and 

 Psychology,' announced in this year, was 

 expected to be ready in the following year. 

 Even now the project is only two thirds 

 completed. Scripture's 'The New Psy- 

 chology' appeared in 1897. Throughout 

 the deeennium almost half a score of text- 

 books for the subject have been prepared 

 for cla.ss-room use, but the year 1898 might 

 be called the year of psychological primers, 

 by reason of the fact that two such books 

 appeared. The same year saw a most in- 

 teresting piece of pioneer work in the 

 appearance of Sanford's 'A Course in Ex- 

 perimental P.syehologj', Part. I., Sen.sation 

 and Perception.' In 1899 Starbuck gave 

 completer form to his 'Psychology of Re- 

 ligion.' 1901 was a year unusually well 

 marked by the appearance of the first 

 volume of the 'Dictionary of Philosophy 

 and Psychology' (though including the 

 work of many hands not American) and 

 Titchener's 'Experimental Psychology: A 

 Manual of Laboratory Practice.' 



The enrichment of American p.sychology 

 through the translation of foreign works 



