594 



SCIENCE 



[N. S. Vol. XXIX. No. 745 



ruary 12 and 13. A larger number than usual of 

 members out in the state were present. President 

 A. A. Tyler delivered the president's address, on 

 " Evidences of Evolution from the Development 

 of Leaves." 



The following papers were read before the 

 academy : 



" The Brown Chert of the Eepublican Valley," 

 by E. E. Blackman. 



" The Manufacture of Hog Cholera Vaccine," 

 by A. T. Peters. 



" The Season of 1908 in the Sioux County Bone 

 Beds" (illustrated), by E. H. Barbour. 



" Geometry as Pure Mathematics," by E. W. 

 Davis. 



" Paint and the Protection of Lumber," by J. 

 Mortenson. 



" Modeling Plant Structures in Paraffin," by 

 R. J. Pool. 



" A Preliminary Study in the Ethnobotany of 

 Nebraska," by M. E. Gilmore. 



" Notes on Western Indian Language," by A. 

 E. Sheldon. 



" The Scientific and Practical Value of Making 

 Nebraska a Tuberculosis-free State," by H. W. Orr. 



"A Plan for Completing the State Flora," by 

 C. E. Bessey. 



" Some Features of the Flora of Grand Island, 

 Nebraska," by C. J. Elmore. 



"The Problem of Defective Sight," by H, B. 

 Duncanson. 



" Comparison of Parasitic Fauna in Atlantic 

 and Pacific Salmon," by H. B. Ward. 



"Are Species Realities or Concepts Only?" by 

 J. H. Powers. 



" Legislative Restrictions to Animal Experi- 

 mentation," by A. E. Guenther. 



" The Importance of a Sanitary Milk Supply," 

 by H. H. Waite. 



" Is the Number of Chromosomes a Test in the 

 Alternation of Generations in Plants? " by R. J. 

 Pool. 



" Notes on the Missouri Valley Loess," by S. 

 W. Stookey. 



" Measurements of Evaporation in Nebraska," 

 by G. A. Loveland. 



The session on Saturday afternoon was given 

 over to a symposium on the " Economic Resources 

 of Nebraska" with the following subjects and 

 leaders: 



" Trees " — Professor F. J. Phillips. 



" Birds " — Professor R. H. Wolcott. 



" Insects " — Professor L. Brunner. 



" Forage and Fruits " — Professor C. E. Bessey. 



" Minerals " — Professor G. E. Condra. 



" Fish " — Professor H. B. Ward. 



The academy accepted the invitation of the 

 Nebraska Chapter of the Sigma Xi to hear the 

 address of Professor A. G. Webster, of Clark 

 University, on " The Creed of a Scientist," and 

 adjourned its regular meeting on Friday evening 

 in order to join with the botanical seminar in a 

 Darwin anniversary meeting with the following 

 program : 



" Pre-Darwinian Evolution," by Mr. Pool. 



" The Life of Darwin," by Dr. Walker. 



" Darwin as a Zoologist," by Professor Ward. 



" Darwin and the Geological Record," by Pro- 

 fessor Barbour. 



" Darwin's Contributions to Botany," by Pro- 

 fessor Bessey. 



" Darwin's Contributions to Plant Physiology," 

 by Professor Wilcox. 



The following were elected officers of the acad- 

 emy for the coming year: 



President — Professor G. E. Condra, Lincoln. 



Y ice-president — Professor A. T. Bell, University 

 Place. 



Secretary — Professor F. D. Barker, Lincoln. 



Treasurer — Professor R. J. Pool, Lincoln. 



F. D. Baekeb, 



Secretary 



THE ACADEMY OF SCIENCE GE ST. LOUIS 



On Monday evening, February 15, 1909, the 

 regular meeting of the St. Louis Academy of 

 Science was held at the Academy Building, 3817 

 Olive Street. The following program had been- 

 arranged by the committee to commemorate the 

 centenary of the birth of Charles Darwin (Feb- 

 ruary 12, 1809) : 



" Darwin as a Naturalist," Professor S. M.. 

 Coulter. 



" Darwin's Influence upon Geology," Professor 

 W. E. McCourt. 



" The Natural Selection Theory and its Later- 

 Day Critics," Professor J. F. Abbott. 



" Some Aspects of Darwin's Influence upon' 

 Modern Tliought," Professor A. 0. Lovejoy. 

 (Read by Dr. Joseph Grindon. ) 



At the conclusion of, the special program, Pro- 

 fessor Nipher presented to the academy some 

 changes in the manner of his experiments, and 

 some of the additional results that he has ob- 

 tained in his studies of " Momentum Effects in 

 Electric Discharge" — reports of whicli have 

 from time to time appeared in Science. 



He reported that he had modified the arrange- 

 ment of tlie wire forming the angle, in his study 



