72 



MR. T. E. GUNX ON THE 





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In examples of paired oVari'es foulid in birds other than the 

 Falconidse, thfe arrangement of the ovaries is more irregular and 

 ■uncertain. They are seldom symmetrically placed, the general 

 tendency being for the right ovary to move downwards and to 

 the left, so that the whole of the left ovary and the greater part 

 of the right are contained in the left half of the body-cavity, one 

 ovary more or less overlapping the other. 



It would appear possible that the partial migration of the right 

 ovary to the left side and below the left ovary may be of 

 importance as furnishing more space for the development of the 

 ovaries. It probably does mark a milestone on the road leading 

 1o its liiml disapl^earancei 



