346 



GEORGE W. BARTELMEZ. 



TABLE IV. (Pigeon No. 6.) 



3 years 5 mos. 53 



79 



in a typical manner, the extremes in normal eggs being 43 and 

 98. The most extreme variations were here clearly due to 

 imperfect orientation in the oviduct. Thus two eggs which had 

 no long axis showed angles of 105 and 180 respectively. Most 

 of her eggs had a well-defined long axis; e. g., no. 497, 21.9 mm. 

 (long axis), 18.0 mm. (transverse axis), 17.5 mm. (polar axis). 

 There w r as no difference to be found in the angles of the eggs laid 

 during the first and second matings. 



Pigeon No. 7. The egg from which this bird was hatched was 

 laid only five days after the last egg of the previous clutch. As it 

 is very rare for a pigeon to lay a second clutch in less than eight 

 days after a first, it seemed possible that the egg might have been 

 laid in no. 4's nest by another bird. However all the active females 

 in the flock had laid within seven days of this date so it seems un- 

 necessary to speculate on the possibility of the parent birds 

 having failed to guard their nest long enough for another bird 

 to lay in it. No. 7 was hatched April 20, 1912, her mate the 

 middle of the following August and they mated in November. 

 The first egg was laid December 2, 1912. The 34 clutches laid 

 during the following two and a quarter years when the w r ork 

 was stopped do not nearly represent the whole active period of 



this bird. 



TABLE V. (Pigeon No. 7.) 



