SCIENCE 



Editorial Committee: S. Newcomb, Mathematics; E. S. Woodward, Mechanics; E. C. Pickeeing, 



Astronomy; T. C. Mendenhall, Physics ; E. H. Thueston, Engineering; lEA Eemsekt, Chemistry; 



J. Le Conte, Geology; W. M. DAVIS, Physiography; O. C. Maesh, Paleontology; W. K. Brooks, 



C. Haet Meeeiam, Zoology; S. H. Scuddee, Entomology; C. E. Bessey, N. L. Beition, 



Botany; Henry F. Osboen, General Biology; 0. S. Minot, Embryology, Histology; 



H. P. BowDiTCH, Physiology; J. S. Billings, Hygiene ; J. McKeen Cattell, 



Psychology; Daniel G. Beinton, J. W. Powell, Anthropology. 



Feidat, April 1, 1898. 



CONTENTS: 



Mimicry in Insects : Eoland Teimen 433 



William A. Rogers: W. Le C. S 447 



Sixth Annual Meeting of the American Psychological 

 Association: De. Livingston Faeeand 450 



The Australasian Association for the Advancement of 

 Science 452 



A Placental Marsupial : H. F. 454 



Owrrent Notes on Anthropology : — 



The Tsimshian Indians; Cave Hunting in Yuca- 

 tan: Peofessoe D. G. Beinton 456 



Notes on Inorganic Chemistry : J. L. H 456 



fie Notes and News 457 



i Educational News 461 



Discussion and Correspondence : — 



The Longecity of Scientific 3Ien : Peofessor 

 Edward S. Holden, Peofessoe Joseph Jas- 

 TEOW 462 



Scientific Literature : — 



A New Edition of Eeker's Frog : Peofessoe J. 

 S. Kingsley. Clark's Laboratory Manual in 

 Practical Botany : Professor Charles E. Bes- 

 sey. Groom's Elementary Botany : Peofessoe 

 Conway MacMillan. Evans' Quantitative 

 Chemical Analysis; Bailey's Guide to the Study 

 of Qualitative Analysis : J. E. G. Arnold's Be- 

 petitorium der Chemie : Peofessoe E. Eenouf. 463 



Societies and Academies :— 



Tlie Biological Society of Washington : F. A. 

 Lucas. Washington Section of the American 

 Chemical Society: William H. Krdg 468 



Nefu) Books , 468 



MSS. intended for publication and books, etc., intended 

 for review should be sent to the responsible editor, Prof. J. 

 McKeen Cattell, Garrison-on-Hudson, N. Y. 



MIMICRY IN INSECTS* 

 Sharing in the perplexity avowedly felt 

 by many of my predecessors in this chair 

 as to the choice of a subject for the annual 

 address — -perplexity arising rather from the 

 redundancy than from the scarcity of ento- 

 mological matter — ^I have been led to think, 

 considering the wide-reaching importance 

 of the questions involved and the unmis- 

 takable interest shown in the recent dis- 

 cussion at two of our meetings, that some 

 account of the mimetic relations existing 

 among insects might not be out of place. 

 Having for a considerable period devoted 

 some attention to the matter, I propose to 

 pass in review what has been placed on 

 record; and if, in so doing, I traverse 

 ground very familiar to most of us, my ex- 

 cuse must be the fascinating interest which 

 attaches to the whole subject. 



The application, by Henry Walter Bates, 

 our lamented President, of the great prin- 

 ciple of natural selection in elucidation oi 

 the mimicries found among insectsf is too 

 well known to require any detailed repeti- 

 tion here. It is suflicient to recall that, as 

 the result of many years' experience in 

 tropical South America, Bates established 

 the facts that (1) among the abundant and 

 conspicuous butterflies of the groups Da- 



* Address of the President, Mr. Eoland Trimen, 

 F.E.S., before the Entomological Society of London, 

 1898. 



t Trans. Linn. Soc, XXIII. (1862). 



