154 



SCIENCE 



[iSr. S. Vol. XXVI. No. 657 



obstructed the flow of the valley stream. Its 

 surface is strewn with large blocks of rock. 

 Its volume is estimated at 900,000,000 eu. m. 

 A little farther east, in a branch of the 

 Kander valley, a similar but much smaller 

 slide forms the barrier by which Oeschinen 

 lake is enclosed in a cirque-like valley head. 



Turnau quotes estimates of the volumes of 

 other landslides. That of Elm, which hap- 

 pened a score of years ago, is 10,000,000 cu. 

 m. ; that of Goldau, a century ago, 15,000,000. 

 Par greater was the prehistoric landslide of 

 Flims in the upper valley of the Ehine, which 

 is estimated at 15,000,000,000 cu. m. ; or a 

 thousand times greater than the Goldau 

 slide, and even sixteen times greater than the 

 great slide of the Kander valley. 



W. M. D. 



PBELIMINABY LIST OF SCIENTIFIC COM- 

 MUNICATIONS TO BE PRESENTED AT 

 THE SEVENTH INTERNATIONAL 

 ZOOLOGICAL CONGRESS, BOS- 

 TON, AUGUST 19 TO 23, 

 1907 



In response to the invitations of the General 

 Committee and of the various secretaries of 

 the organization a generous number of accept- 

 ances to address the congress or to read papers 

 before its sections have been received. The 

 communications thus submitted fall under 

 three heads : addresses, for which the speakers 

 have been invited; voluntary communications 

 to be given before sections ; and demonstra- 

 tions. The number and quality of these con- 

 tributions presage an unusually successful 

 meeting. 



The following speakers have consented to 

 deliver addresses either before the general 

 meetings or the sectional meetings : Professor 

 W. Bateson, Cambridge, England; Professor 

 C. Deperet, Lyons, Prance; Dr. H. Driesch, 

 Heidelberg, Germany; Dr. T. IST. Gill, Wash- 

 ington, D. C. ; Professor Richard Hertwig, 

 Munich, Germany; Dr. G. Horvath, Budapest, 

 Hungary; Dr. L. 0. Howard, Washington, D. 

 C. ; Professor A. A. W. Hubrecht, Utrecht, 

 Holland ; Professor J. Loeb, Berkeley, Cal. ; 

 Professor C. E. McClung, Lawrence, Kan.; 

 Professor J. P. McMurrieh, Ann Arbor, Mich. ; 



Sir John Murray, Edinburgh, Scotland; Dr. 

 E. P. Scharff, Dublin, Ireland; and Professor 

 C. O. Whitman, Chicago, 111. 



For the presentation and discussion of sci- 

 entific communications fifteen sections have 

 been tentatively named and the organization 

 of each section has been put into the hands of 

 a secretary to whom requests concerning that 

 section should be addressed. The names of 

 the sections and the persons having charge of 

 them are as follows : General Zoology, P. E. 

 Lillie, Chicago, 111.; Systematic Zoology, D. 

 S. Jordan, Stanford University, Cal.; Ento- 

 mology, L. 0. Howard, Washing-ton, D. C. ; 

 Ornithology, Witmer Stone, Philadelphia, Pa.; 

 Palseozoology, H. P. Osborn, New York, IsT. 

 Y. ; Comparative Anatomy, C. S. Minot, Bos- 

 ton, Mass., and J. S. Kingsley, Tufts College, 

 Mass.; Embryology, E. G. Conklin, Philadel- 

 phia, Pa. ; Cytology, E. B. Wilson, New York, 

 N. Y. ; Zoogeography, L. Stejneger, Washing- 

 ton, D. C. ; Thalassography, W. E. Eitter, 

 Berkeley, Cal. ; Applied Zoology, C. W. Stiles, 

 Washington, D. C. ; Comparative Physiology, 

 W. B. Cannon, Boston, Mass. ; Experimental 

 Zoology, T. H. Morgan, New York, N. Y.; 

 Heredity, C. B. Davenport, Cold Spring Har- 

 bor, N. Y, and Animal Behavior, H. S. Jen- 

 nings, Baltimore, Md. 



The following preliminary list of communi- 

 cations is announced for the sectional meet- 

 ings: 



T. B. Aldrich: Title not yet received. 



R. J. Anderson : " Notes on the Movements in 

 Some Animals, with especial reference to their 

 Susceptibility to Training," "A Short Review of 

 the Mammalian Mandible," " Illustrations Sug- 

 gestive of the Mode of Formation of the Cetacean 

 Flipper." 



S. VON Apathy : " New Method of Making 

 Serial Celloidin Sections," "An Unintentional Ex- 

 periment on Living Nuclei and the Real Structure 

 of the Cell Nucleus," " New Facts and Critical 

 Notes about Neurofibrillse," " The Presence of 

 Krause's Membrane as a Greneral Feature of Stri- 

 ated Muscles." 



S. AwERlNZEW : " Ueber die Myxosporidien von 

 Drepanopsetta platessoides," '' Die Marine Bio- 

 logische Station an der Murman-Ivtiste." 



C. R. Bardeen: Title not yet received. 



P. Bartsch : " A Study in Distribution based 



