xxiv PROCEEDINGS OF THE CENTENARY MEETING. 



Marshall Avery Howe, Ph.D., Curator of the Museum of the New York 

 Botanical Garden: 



Reef-building and Land-forming Seaweeds, illustrated by views and 

 specimens.* 



At the conclusion of Dr. Howe's paper the audience adjourned to the 

 New Hall the old library hall transformed where a liberal lunch was 

 enjoyed. 



The meeting reassembled at 2 :30 P. M., when Benjamin Smith Lyman, former 

 Chief Geologist of the Empire of Japan, read a paper entitled "Natural History 

 Morality." B 



It was followed by : 



Jacques Loeb, M.D., Sc.D., of the Rockefeller Institute for Medical Re- 

 search : 



Experiments on Adaptation of Animals to Higher Temperatures. 

 Henry Skinner, M.D., Sc.D., Curator of Entomology in The Academy of 

 Natural Sciences of Philadelphia, Professor of Entomology in the Pennsylvania 

 Horticultural Society: 



Mimicry in Butterflies.* 

 Spencer Trotter, M.D., Professor of Natural History in Swarthmore 

 College : 



The Faunal Divisions of Eastern North America in Relation to Vegetation.* 

 T. Wayland Vaughan, Ph.D., of the United States Geological Survey: 



Rate of Growth of Stony Corals. 

 Henry Augustus Pilsbry, Sc.D., Curator of Mollusca in The Academy of 

 Natural Sciences of Philadelphia: 



On the Tropical Element in the Molluscan Fauna of Florida.* 

 The session closed with illustrations by means of a collection of superb lantern 

 views, of methods of photographing wild birds, by William L. Baily. 



Thursday, March 21. 



The session was called to order by the President. The place assigned on the 

 program to the late Dr. Montgomery was taken by Edwin J. Houston, Ph.D., 

 Professor of Physics in the Central High School of Philadelphia, who made 

 an interesting communication on "How the Natural Sciences can be made 

 Attractive to the Young." * 



The following papers were then read: 



James A. G. Rehn, Assistant in Entomology in The Academy of Natural 

 Sciences of Philadelphia: 



The Orthopteran Inhabitants of the Sonoran Creosote Bush.* 



Merkel H. Jacobs, Ph.D., of the Wistar Institute of Anatomy and 

 Biology: 



Physiological Characters of Species.* 



6 Proceedings of the Academy, LXIV, March, 1912. 



