832 



SCIENCE. 



[N. S. Vol. XXII. No. 573. 



Jennings, in a paper entitled ' Modifiability in 

 Eehavior. I. Behavior of Sea Anemones,' shows 

 that the course of the internal physiological 

 Ijrocesses, the past experience of the organism, 

 and various other internal factors, partly de- 

 termine the behavior of sea anemones and 

 modify fundamentally their reactions to ex- 

 ternal stimuli. In a second paper entitled 

 ' The Method of Regulation in Behavior and 

 in other Fields,' the same author gives a gen- 

 eral outline of the method of regulation shown 

 in the behavior of the lower organisms. E. B. 

 Wilson's ' Studies on Chromosomes,' No. II., 

 deals with some of the specific classes of 

 chromosomes in the Hemiptera, and their his- 

 tory in the maturation phenomena, and is in- 

 tended to clear the ground for a study of the 

 sexiial relations of the chromosome groups. 

 An appendix records facts, determined by later 

 observations, that give complete confirmation 

 of the theoretic expectations regarding the 

 sexual relations, stated in the general discus- 

 sion. (See issue of Science for October 20, 

 1905.) Chas. W. Hargitt (Variations among 

 Scyphomedusse), gives a detailed study of the 

 variations found in Aurelia flavidula, with a 

 view to determine their relations to the prob- 

 lems of adaptation and natural selection. 

 Lorande Loss Woodruff (An Experimental 

 Study of the Life-History of Hyptrichous In- 

 fusoria), describes five cultures, all of which 

 passed through cycles of greater and less gen- 

 eral vitality as measured by the rate of divis- 

 ion. Beeovery from, a period of extreme 

 depression was effected by extract of beef. 

 Minor fluctuations occurred which are termed 

 ' rhythms ' and are to be clearly distinguished 

 from cycles. A description is given of the 

 cytoplasmic and nuclear changes during the 

 life-cycle, as well as of a series of experiments 

 on the effect of salts on the division rate. 



SOCIETIES AND ACADEMIES. 



THE CONVOCATION WEEK MEETINGS OF SCIENTIFIC 

 SOCIETIES. 



There will meet at ISTew Orleans: 

 The American Association for the Advancement 

 of Science. — The week beginning on December 28. 

 Retiring president, Professor W. G. Farlow, Har- 

 vard University; president-elect, Professor C. M. 

 Woodward, Washington University, St. Louis, 



Mo.; permanent secretary. Dr. L. 0. Howard, 

 Cosmos Club, Washington, D. C; general secre- 

 tary. Professor C. A. Waldo, Purdue University, 

 Lafayette, Ind.; secretary of the council, Dr. John 

 F. Hayford, U. S. Coast and Geodetic Survey, 

 Washington, D. C. 



Local Executive Committee. — Honorary presi- 

 dent, President E. B. Craighead, Tulane Univer- 

 sity; executive president, Professor George E. 

 Beyer, Tulane University; secretary, Henry M. 

 Mayo, The New Orleans Progressive League; 

 treasurer, Mr. Clarence F. Low, of the Liverpool, 

 London and Globe Insurance Company. 



Section A, Mathematics and Astronomy. — ^Vice- 

 president, Dr. W. S. Eichelberger, U. S. Naval 

 Observatory, Washington, D. C; secretary, Pro- 

 fessor L. G. Weld, University of Iowa, Iowa City, 

 Iowa. 



Section B, Physics. — Vice-president, Professor 

 Henry Crew, Northwestern University, Evanston, 

 111.; secretary. Professor Dayton C. Miller, Case 

 School of Applied Science, Cleveland, Ohio. 



Section C, Chemistry. — Vice-president, Professor 

 Charles F. Mabery, Case School of Applied Sci- 

 ence, Cleveland, Ohio; secretary. Professor Charles 

 L. Parsons, New Hampshire College of Agricul- 

 ture, Durham, N. H. 



Section D, Mechanical Science and Engineering. 

 — Vice-president, Professor F. W. McNair, Hough- 

 ton, Mich.; secretary. Professor Wm. T. Magruder, 

 Ohio State University, Columbus, Ohio. 



Section E, Geology and Geography. — ^Vice-presi- 

 dent, Professor Wm. North Rice, Wesleyan Uni- 

 versity, Middletown, Conn. ; secretary, Dr. Edmund 

 0. Hovey, American Museum of Natural History, 

 New York, N. Y. 



Section F, Zoology. — ^Vice-president, Professor 

 Henry B. Ward, University of Nebraska, Lincoln, 

 Nebr. ; secretary, Professor C. Judson Herrick, 

 Denison University, Granville, Ohio. 



Section G, Botany. — Vice-president, Dr. Erwin 

 F. Smith, U. S. Department of Agriculture, Wash- 

 ington, D. C; secretary. Professor F. E. Lloyd, 

 Teachers College, Columbia University, New York, 

 N. Y. 



Section H, -Anthropology. — ^Vice-president, Dr. 

 George Grant MacCurdy, Yale University, New 

 Haven, Conn.; secretary, George H. Pepper, Amer- 

 ican Museum of Natural Histoiy. 



Section I, Social and Economic Science. — Pro- 

 fessor Irving Fisher, Yale University, New Haven, 

 Conn.; secretary, Dr. J. F. Crowell, Bureau of 

 Statistics, Washington, D. C. 



Section K, Physiology and Experimental Medi- 

 cine. — Vice-president, Professor Wm. T. Sedg- 



