1893.] Proceedings of Scientific Societies. 307 
Treasurer, Professor W. T. Sedgwick, Boston ; Executive Committee, 
Professor W. G. Farlow, Cambridge; Professor J. A. Ryder, Philadel- 
phia. 
Special reports on the work of the preceding season were made by 
Professor W. Libbey, Jr., on the summer work of the U.S. Fish Com- 
mission schooner, Grampus ; by Dr. J. L. Wortman on the Exhibitions 
of the American Museum of Natural History in New Mexico, 
Wyoming and Dakota; and by Professor E. D. Cope on the Paleonto- 
logical Exploration of the Staked Plains of Texas by the Geological 
Survey of Texas. 
On Dec. 29th the Annual Discussion took place. The question was, 
What were the former Areas and Relations of the American Continent 
as determined by Faunal and Floral Distributions? The discussion 
was opened by a paper from Professor W. B. Scott, of Princeton, on 
“ Evidence from past and present Distribution of Mammalia.” Pro- 
fessor J. A. Allen read a paper on the Evidence from the Distribution 
of Birds; and Dr. N. L. Britton on Evidence from the Distribution of 
lants. 
American Morphological Society.—The annual meeting was 
held at Princeton, N. J., Dec. 28-29, 1892. The following papers 
were read: Dr. E. B. Wilson, Columbia College, The cleavage of the 
ovum and the teloblasts of Amphioxus. Dr. C. W.Stiles, Department 
of Agriculture, Washington, The topographical anatomy in the family 
Tæniadæ. Dr. E. O. Jordan, University of Chicago, The maturation 
and Fertilization of the egg of the Newt. Professor E. D. Cope, Phil- 
adelphia, False Elbow Joints in Man and the Horse. Mr. Arthur 
Willey, Columbia College, On Acinetæ parasitic in the buccal tube of 
Diplosoma. Dr. C. B. Davenport, Harvard College, The development 
of the cerata of Eolis. Dr. H. B. Ward, University of Michigan, The 
host of Nectonema. Dr. C. O. Whitman, University of Chicago, The 
metamerism of Clepsine. Dr. W. B. Scott, Princeton College, The 
evolution of the premolars. Dr. H. A. Ayers, of the Lake Laboratory, 
Milwaukee, The ending of the auditory nerves in the hair-cells. Dr. 
E. A. Andrews, Johns Hopkins University, Notice of a new sort of 
Amphioxus. Professor A. E. Verrill, Yale College, Some New forms 
of Nemerteans. Dr. T. H. Morgan, Bryn Mawr College, Preliminary 
note on Balanoglossus. Professor B. Sharp, Academy of Natural 
Sciences, Philadelphia, Joint formation among the Invertebrata. Pro- 
fessor W. A. Locy, Lake Forest University, The formation of the 
