170 The American Naturalist. [February, 



tation of the Rules of Definition in Logic, Professor Alfred H. Lloyd. 



Saturday, December 28, 10 A. M. — Discussion on Consciousness and 

 Evolution, Professors William James, E. D. Cope, J.Mark Baldwin 

 and G. S. Ladd. 



2.30 P. M.—An Experiment on the Effects of Loss of Sleep, Profes- 

 sor G. T. W. Patrick ; Further Researches on the Psychic Develop- 

 ment of Young Animals, and its Physical Correlation, Professor Wesley 

 Mills ; Variations in the Patellar Reflex as an Aid in Mental Analy- 

 sis, Professor Lightner Witmer ; Experiments on Induced Hallucina- 

 tions, Professor James H. Hyslop ; A Case of Dream Reasoning, Pro- 

 fessor W. Romaine Newbold. 



Informal communications were made at various times during the 



A fuller account of the papers and discussions will be found in our 

 department of Psychology ; q. v. 



Indiana Academy of Science.— The eleventh Annual Meeting 

 of the Indiana Academy of Science was held at Indianapolis, Decem- 

 ber 27th and 28th. 



The session was of unusual interest and the attendance good. Forty 

 two new members were elected. This indicates the interest that is 

 being aroused in the State in scientific lines. 



The address of the retiring President, A. W. Butler, of Brookville, 

 on " Indiana : A Century of Changes in the Aspects of Nature," met with 



A poem on the "Naturalist" recited by W. W. Pfrimmer was a 

 novel, yet enjoyable feature. 



The report of the biological Survey of Turkey Lake was another new 

 feature of the meeting, and attracted much favorable attention. 



The following papers were presented : 



Unconscious Mental Cerebration, C. E. Newlin ; Human Physiology 

 in its Relation to Biology, Guido Bell ; A means of preventing Hog 

 Cholera, D. W. Dennis ; The Hopkins Seaside Laboratory at Pacific 

 Grove, Cal., B. M. Davis ; Glacial and Eolian Sands of the Iroquois 

 and Tippecanoe River Valleys, A. H. Purdue ; The recent earthquakes 

 east of the Rocky Mountains, A. H. Purdue ; Some minor processes of 

 Erosion, J. T. Scoville ; Kettle Holes at Maxinkuckee, J. T. Scoville ; 

 Fossils from sewer trenches in the Glacial Drift, Win. M. Whitten ; 

 Relief map of Arkansas, John F.Newsom ; Notes on the Fauna of the 

 black shales of Bartholomew and Jackson Counties, V. F. Marsters ; 

 Botanical Literature of the State Library, John S. Wright ; Micro- 

 scope slides of vegetable material for use in Determinative work, John 



