872 The American Naturalist. [September, 
Papers read on Monday, August 24th, in Section £.— Geology and 
Geography.—Subsidence and Deposition as Cause and Effect, E. W. 
Claypole. On the Paleontological and Geological Relation of Closely 
Similar Fossil Forms, C. A. White. The Crystalline Rocks of Cen- 
tral Texas, Theo. B. Comstock. The Geology of the Wichita Moun- 
tains, Indian Territory, Theo. B. Comstock. The Silurian System and 
Its Geanticline in Central Texas and Indian Territory, Theo. B. Com- 
stock. Topographical Evidence of a Great and Sudden Diminution 
of the Water Supply in the Ancient Wabash, John T. Campbell. 
Glacial Action Considered as a Continuous Phenomenon, Having 
Shifted from One Locality to Another, P. H. Van der Weyde. Geol- 
ogy of Indian Territory South of Canadian River, R. T. Hill and 
James S. Stone. The Recent Explosion of Natural Gas in Shelby 
County, Ind., H.E. Pickett and E. W. Claypole. Note on the Stony 
Meteorite that Recently Fell in Washington County, Kan., E. H. S. 
Bailey. The Bendigo (Brazil) Meteorite, Orville A. Derby. A New 
Method of Searching for Rare Elements in Rocks, Orville A. Derby. 
Observations on the Genesis of Certain Magnetites, Orville A. Derby. 
Nepheline-Bearing Rocks in Brazil, Orville A. Derby. 
Section F.—Biology.—The Development and Function of the So- 
called Cypress ** Knees," with a Consideration of the Natural Habitat 
of the Tree, W. P. Wilson. Potato Scab, a Bacterial Disease, H. L. 
Bolley. The Continuity of Protoplasm T hrough the Cell-Walls of 
Plants, W. J. Beal and T. W. Tuomey. Preliminary Note on the 
Genus Rhynchospora in North America, N. L. Britton. On Rusbya, 
a New Genus of Vacciniacex from Bolivia, N. L. Britton. The Dis 
tribution of Land Birds in the Philippine Islands, J. B. Steere. Exhi- 
bition of Diagrams Illustrating the Formation of the Human Sylvian 
Fissure, Burt G. Wilder. Structure of the Stomach of Amia calva, G. 
S. Hopkins. Differentiation of the Primitive Segments in Vertebrates, 
C. S. Minot. A Support for the Chorda Tympani Nerve in Felide, 
T. B. Spence. Notes on the Amphibia of Ithaca, Simon H. Gage and 
H. W. Norris. 
Section H.— Anthropology.—The Form of the External Ear, H. D. 
Garrison. Preliminary Steps to an Archeological Map of Franklin 
County, Ind., H. M. Stoops. The Relation of Mind to its Physical 
Ind., J. W. Spencer. On the Atbatl or Spear-Thrower of Ancient 
Mexico, Zelia Nuttall, On an Ancient Hearth in the Little Miami 
Valley, F. W. Putnam. The Evolution of a Sect, Anita Newcomb 
McGee. On Obsidian Implements of California, H. N. Rust. The 
X 
