x The Biological Society of Washington. 



H. E. Van Deman remarked on the abundance of mayflies 

 on the shore of Lake Erie near Sandusky. 



The following communications were presented: 



Theo. N. Gill: Recent Discoveries in the Natural History of 

 Eels.* 



A. L. Quaintance: The Pear Thrips Problem in California. 



October 31, 1908 — 447th Meeting. 



The President in the chair and 30 persons present. 



There were no regular communications. The evening was 

 devoted to a discussion of the necessity for an immediate bio- 

 logical survey of the Isthmus of Panama. 



November 14,1908 — 448th Meeting. 



The President in the chair and 25 persons present. 

 Tbe following communications were presented : 

 Hugh M. Smith : Photography of Living Fishes. 

 Henry Oldys : Some Deductions from the Nesting of Birds. 

 Wells W. Cooke : The Earliest Migration Records in the 

 United States. 



November 28, 1908 — 449th Meeting. 



The President in the chair and 55 persons present. 



H. W. Clark noted the occurrence of partially buried maple 

 Seeds. 



L. O. Howard noted the existence of an unknown means of 

 distribution of the gypsy moth. 



The following communication was presented : 



F. Creighton Wellman : General Biological Conditions in 

 Angola, Portuguese West Africa. 



December 12, 1908 — 450th Meeting. 



The meeting was held in the lecture hall of George Washing- 

 ton University, the President in the chair and 240 persons 

 present. 



The following communication was presented: 



Ernest Thompson Seton : Two Thousand Miles by Canoe to 

 the Arctic Region. 



• Science, December 11, 1908, p. 845. 



