19 



[ \NSERIX.E. 



The proportions of the skeleton are as follow : — Depth of the keel to the length of the 

 sternum, as 1 to 4. Breadth of pelvis to its length, as 1 to 2j. Length of sternum to that of tibia, 

 as 1 to 2. Depth of cranium to its length, as 1 to 3. 



Affinities. Although we have placed the swans with the geese, we are not by any means 

 certain that it is their proper place. 



