202 



The Ottawa Naturalist. 



[January 



them, and I hope to see other investigations in this Hne. The 

 table below giving the measurement of each egg in cubic centi- 

 meters, with total contents of set, average, etc., is followed by 

 notes on several of the sets by Mr. Saunders, showing the relative 

 sizesof eggs deposited from year to year by the same bird. 



RED-SHOULDERED HAWK. 



Largest eg^, 67 cc. ; smallest, 40 cc. 

 Largest set, 253 cc. ; smallest, 133 cc. 



Largest egg to set, 63^ cc. ; smallest average Qgg to set, 

 4 1 ^4 cc. 



Average of 85 eggs measured 50^f cc. 

 Average contents per set, i72|f cc. 



