-36- 



are not greatly diminished even at their extreme posterior end. 



If, as Dohrn says, the coilirif^ of the posterior end 

 of the thyroid rland Is caused by its longitudinal growth being 

 more rapid than the space in which it lies, it is difficult to 

 see why the lateral cell-groups have not taken part in the coil, 

 instead of projecting as they do for a considerable distance 

 posterior to the coil. 



