TEGUMENTAL ORGANS 



23 



from the crown of the head. These were evidently the sites of 

 former teats that is, of former orifices ; for, as Ammon rightly 

 remarks, the hair vortices agree with the diverging vortex 

 found at the point where the canalis sacralis finally becomes 

 closed the glabella coccygea, or " sacral dimple," which lies above 

 the coccygeal vortex. This latter, however, is a converging vortex, 



A 



Fio. 15. FRONT VIEW OF THE BODY OF A HOSPITAL ASSISTANT, TWENTY-TWO AND A 



HALF YEARS OLD. (After 0. Ammon.) 



m, normal teats ; *, hair vortices above these, pointing to the former presence of 

 supernumerary teats. 



such as always occurs where a protuberance formerly existed (cf. 

 ante, p. 5) ; but the glandular area of the breast, as Ammon further 

 rightly argues, originally developed not as an elevation, but as a 

 depression, out of which the teat rose up secondarily. According 

 to Ammon there are, on the normal teats also, smaller diverging 

 vortices, in which "the hairs course round and round the areolae . . . 

 but these are soon lost in the general course of the hair tracts." l 



1 I here reprint by permission a letter received from Herr Otto Ammon, on the 

 10th February 1892. 1 have refrained from commenting upon it, as I have not yet 

 been able to confirm the observation recorded : 



" Allow me to draw your attention to another case which I have not yet recorded. 



