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. 



Fbidat, October 7, 1904. 



CONTENTS: 

 The Sciences of the Ideal: Professor Josiah 

 RoYCE 449 



Scientific Books: — 



The Harriman Alaska Expedition — Crusta- 

 ceans: Dr. W. H. Dall. Cohnheim on 

 Chemie der Eivyeisskorper : Professor La- 

 fayette B. Mendel 462 



Scientific Journals and Articles 465 



Discussion and Correspondence: — 



.1 Recent Paleontological Induction: Dr. 

 Charles E. Eastman, Julius Henderson 465 



Special Articles: — 



Determination of Longitude: Edwin Smith 466 



Botanical Notes: — 



Systematic Notes; Studies of Sexuality in, 

 Black Molds; Egg Formation in Green 

 Felt; Recent Forestry Bulletins: Professor 

 Charles E. Bessey 471 



Declaration of the National Educational 

 Association 474 



Cooperation in Magnetic and Allied Observa- 

 tions during the Total Solar Eclipse: Dr. 

 L. A. Bauer 475 



The Cotton Boll Weevil 475 



Scientific Notes and Netcs 476 



University and Educational News 480 



MSS. inteuded for publicatiou aud books, etc.. intended 

 for review should be sent to the Editor of Science, Harri- 

 son-on-HndHon. N. Y 



TEE SCIENCES OF THE IDEAL* 

 I SHALL not attempt, in this address, 

 either to justify or to criticize the name, 

 normative science, under which the doc- 



* Address for the St. Louis Congress of Arts and 

 Science, before the Division of Normative Science. 



trines which constitute this division are 

 grouped. It is enough for my purpose 

 to recognize at the outset that I am re- 

 quired, by the plans of this congress, to 

 explain what scientific interests seem to me 

 to be common to the work of the philos- 

 ophers and of the mathematicians. The 

 task is one which makes severe demands 

 upon the .indulgence of the listener, and 

 upon the expository powers of the speaker, 

 but it is a task for which the present age 

 has well prepared the way. The spirit 

 wliicli Descartes and Leibniz illustrated 

 seems likely soon to become, in a new and 

 higher sense, prominent in science. The 

 mathematicians are becoming more and 

 "more philosophical. The philosophers, in 

 the near future, will become, I believe, more 

 and more mathematical. It is my office to 

 indicate, as well as the brief time and my 

 poor powers may permit, why this ought 

 to be so. 



To this end I shall first point out what 

 is that most general community of interest 

 which unites all the sciences that belong 

 to our division. Then I shall indicate what 

 type of recent and special scientific work 

 most obviously bears upon the tasks of all 

 of us alike. Thirdly, I shall state some 

 results and problems to which this type of 

 scientific work has given rise, and shall try 

 to show what promise we have of an early 

 increase of insight regarding our common 

 interests. 



I. 



The most general community of interest 

 which unites the various scientific activities 



