viii The Biological Society of MasMnffton. 



F. A. Lucas: A Phase of the Blue Fox Question.* 

 R. H. True: The Physiology of Sea Water. 



February 8, 1902 — 349th Aleeting. 



The President in the chair and 36 persons present. 

 The following communications were presented: 

 Chas. A. White: The Mutation Theory of von Hugo de 

 Vries.f 



II. W, Olds: Some Deductions from the Study of Bird Song. I 



February 22, 1902— 350th Meeting. 



The President in the chair and 18 persons present. 



V. K. Chesnut exhibited a variety of spring scales for field 

 use. 



F. A. Lucas discussed a paper entitled Bird-killing as a Method 

 in Ornithology. 



The following communications were pi'esented: 



C. H. Townsend: The Present Status of the Carp in Ameri- 

 can Waters. 



C. P. Hartley: Some Effects of Pollinating Premature 

 Flowers. || 



L, H. Dewey: The Identity of Prickly Lettuce. 



F. A. Lucas: The Armor of Stegasaurs. 



March 8, 1902—35151 Meethig. 



The President in the chair and V8 persons present. 



L. O. Howard exhibited photographs showing the supposed 

 Hbrous structure of artificial protoplasm. 



The following communications were presented: 



C Hart Merriam: Protective and Directive Coloration in 

 Animals. 



L. O. Howard: Some Common Instances of Protective Color- 

 ation among Insects. 



^Science, XVI, 21G, Aug. 8, 1902. 



fSmithsonian Report for 1901, pp. 631-640, 1902. 



^Harper's Magazine, CV, pp. 474-478, Aug. 1902. 



lIBull. No. 22, Bm-eau PI. lad., U. S. Dept. Agric, pp. 1-39, Oct. 1903, 



