^889-] Proceedings of Scientific Societies. 545 
February 9. The following papers were read : Mr. B. F. 
Galloway, Diseases of the Sycamore.— Dr. Thomas Taylor, 
A new Freezing Microtome.— Mr. A. A. Crozier, Influence of 
Foreign Pollen on Fruit— Mr. J. N. Rose, Geographical Dis- 
tribution of the Umbelliferse.— Dr. C. Hart Merriam, A New 
and Remarkable Vole from British Columbia. 
February 23d. Mr. E. M. Hasbrouck, A New Maryland 
Yellow-throat.— Mr. M. B. Waite, Notes on Melampsora hyd- 
rangecz Lusk. Notes the Seed Vessels of the Lop Seed Phyrma 
leptostachya.—mx. Chas. D. Walcott, The Genus Olenoides of 
Meek.— Dr. R. L. Stejneger, Notes on Pallas' Cormorant.— Mr. 
F. V. Colville, The Fruit of Stipa spartea.—^r. C. Plart Mer- 
riam, A New Marmot from the Sierra Nevada. 
March 9 —Mr. Geo. B. Sudworth, Variations in the genus 
Querctis.~Mr. W. B. Barrows, Dangerous seed- planting by 
the Crow.— Dr. C. Hart Merriam, A new Ground Squirrel from 
the Southwest.— Mr. Chas. D. Walcott, The Genus Olenellus 
of Hall. 
March 23. Dr. W. H. Seaman, Our Present Knowledge of 
the Rotifers.— Mr. C L. Hopkins, A Point of Definition.— Mr. 
Geo. B. Sudworth, Variations in the genus Quercus.—Wx. W. 
H. Dall, Reproductive Organs in Certain forms of Gasteropoda. 
April 20. Prof. Joseph F. James, The Effect of Rain on 
Earthworms.— Mr. F. W. True, The Occurrence of Sowerby's 
Whale ontheCoastof New Jersey.— Mr. Theo. Holm, The Ger- 
mination of Sarracenia, Rheum, Peltandra, Hemerocallis and 
Cyperus— Dr. C. Hart Merriam, A new Vole from the Gulf 
of St. Lawrence.— Mr. Geo. B. Sudworth, The Influence of 
Odor in Attracting Insects. 
May 4. Mr. W. T. Hornaday, Exhibition of a Specimen of 
the Black- footed Ferret (/^z^/i?rza.f nigripes).—Ur. B. E. Fernow, 
Annual Ring-Growth.— Dr. Theobald Smith, Parasitic Prozo- 
toa {Coccidia) in the Renal Epithelium of a Mouse. — Dr. H. 
E. Van Deman, Tropical Fruit of the Lake Worth Region. — 
Dr. C. Hart Merriam, A new Spermcphile from Arizona. 
May 17. Dr. C. Hart Merriam, Two new Spermophile 
from the Lower Colorado, with remarks on the Importance o 
the Type Locality in the Study of Species.— Dr. Cooper Cur 
tice, How Entozoa Cause Disease.— Mr. Frederick W. True, 
Exhibition of a Skull of a Female Narwhal with two well 
veloped Tusks. — Mr. L. O. Howard, Notes on Spider Bites. — 
