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; R. S. WoopwarpD, Mechanics; E. C. PICKERING, 
Astronomy ; T. C. MENDENHALL, Physics ; R. H. THURSTON, Engineering ; IRA REMSEN, Chemistry ; 
JOSEPH LE ContTE, Geology ; W. M. Davis, Physiography ; HENRY F. OsBORN, Paleontology ; 
W. K. Brooks, C. HART MERRIAM, Zoology ; S. H. ScuDDER, Entomology ; C. E. BESSEY, 
N. L. Brirron, 
Physiology; J. 8S. BILLINGs, 
Botany ; C. S. Minot, Embryology, Histology ; H. P. Bowpircn, 
Hygiene ; 
WittiAM H. WeEtcH, Pathology ; 
J. McK&EEN CATTELL, Psychology ; J. W. POWELL, Anthropology. 
Friday, FEBRUARY 22, 1901. 
CONTENTS 
The Mind of Primitive Man: PROFESSOR FRANZ 
TRONS o> scasbonocosqonsacnosboo0nccqacenee caosc0090900900000 281 
The Eleventh Meeting of the Amvcrican Morpholog- 
ical Society: DR. THos. H. MONTGOMERY, JR. 296 
The Projection of Ripples by a Grating: PROFESSOR 
(Gl, TBVATRIUEL. acacconadoangbsnensen ppsnoscaacéodon ococoogoacbo 297 
Reviews of Current Botanical Literature : PROFESS- 
OR CHARLES E. BESSEY. ........-..200-e-e0c2+ -00--- 298 
Scientific Books :— 
The Society for the Promotion SRiENGineeHNG Edu- 
cation: PROFESSOR R. H. THuRsTon. Kant’s 
Cosmogony: PROFESSOR R. M. WENLEY. Wad- 
dels School Chemistry: J. E. G. Books Re- 
(HABE 0-5 92g 0ns0s9 os0ncncsangeaooancGC0s00 . 301 
Scientific Journals and Articles 305 
Societies and Academies :— 
The Philosophical Society of Washington : 
K. WEAD. 
F. A. LUCAS. 
ington: WALTER HouGH, Chemical Society of 
Washington: Dr. WM. H. Krua. Section of 
Anthropology and Psychology of the New York 
Academy of Sciences: PROFESSOR CHAS. H. 
UID 5 32¢coaasnccuacoodsoossonee0 Lose scoconsesoc0 900000900 306 
Discussion and Correspondence :— 
Free Speech in Universities: PROFESSOR F. W. 
(CUEVAT RESIS, cacoconsipapancoedseco0059 scan Sena Becnsdas50a0q90eq 309 
Shorter Articles :— 
The Relation of Seediness to Quality in Melons: 
PRoressor BE. S. Gorr. Predetermined Evolu- 
tion: PROFESSOR T. D. A. COCKERELL. ......... 310 
Notes on Physics :— 
Non-permanence of Weight ; 
CHAS. 
Biological Society of Washington : 
Anthropological Society of Wash- 
cle Electromagnetic 
Theory of Radiation: W. S. F........0..:0000 . 312 
Notes on Inorganic Chemistry : *S L. H. .. 313 
The Naval Observatory. ........2+...0+s000 20 -.. 314 
The Department of Agriculture.. soo BIE) 
Scientifie Notes and News.. eons coo SIGS 
Universitu and Blount News Bn ScosGonacoreccaneeE 320 
Mss. intended for publication and books, etc., intended 
fur review should be sent to the responsible editor, Pra- 
fessor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 
THE MIND OF PRIMITIVE MAN. * 
One of the chief aims of anthropology 
is the study of the mind of man under the 
varying conditions of race and of environ- 
ment. The activities of the mind mani- 
fest themselves in thoughts and actions, 
and exhibit an infinite variety of form 
among the peoples of the world. In order 
to understand these clearly, the student 
must endeavor to divest himself entirely 
of opinions and emotions based upon the 
peculiar social environment into which he 
is born. He must adapt his own mind, so 
far as feasible, to that of the people whom 
he is studying. The more successful he is 
in freeing himself from the bias based on 
the group of ideas that constitute the civil- 
ization in which he lives, the more suc- 
cessful he will be in interpreting the beliefs 
aud actions of man. He must follow lines 
of thought that are new to him. He must 
participate in new emotions, and under- 
stand how, under unwonted conditions, 
both lead to actions. Beliefs, customs, 
and the response of the individual to the 
events of daily life, give us ample oppor- 
tunity to observe the manifestations of the 
mind of man under varying conditions. 
The thoughts and actions of civilized 
man and those found in more primitive 
forms of society prove that, in various 
* Address of the retiring president before the 
American Folk-Lore Society, Baltimore, Dec. 27th. 
