32 PHYSIOLOGICAL SERIES. 



the horn with the skull, the loose spongy texture in the 

 centre of the bone, and the outer, compact, last-formed 

 layer. 0. C. 181. Hunterian. 



A. 128. A slice of the same parts as the preceding preparation, 

 showing the same circumstances. 0. C. 182. Hunterian. 



A. 129. A transverse section of the beam of the same antler as 

 A. 127, injected and steeped in acid, " showing the two 

 stages of growth, and its becoming cellular in the centre." 

 [This is the original description in the manuscript Cata- 

 logue ; but Mr. Hunter, unfortunately, has not left any 

 commentary or further explanation of his ideas respecting 

 this specimen.] O.C.I 83. JIunterian. 



A. 130. A similar preparation. 0. C. 184. Hunterian, 



A. 131. A similar preparation. 0. C. 185. Hunterian. 



A. 132. A section of part of the skull and base of the antler, a 

 short time previous to its being shed ; injected and steeped 

 in an acid. It shows the commencement of the interstitial 

 absorption at the root of the antler, which renders that part 

 soft and yielding ; and also the separation of the outer, 

 last-formed, compact layer of bone from the internal spongy 

 part. 0. C. 186. Hunterian. 



A. 133. A slice of the same parts as the preceding preparation, 

 which exhibits more clearly the progress of the interstitial 

 absorption at the base of the antler. 0. C. 187. Hunterian. 



Development of other Bones. 



A. 134. The cranium of a Human Fretus (at about six months), 

 showing the several places of commencement or centres of 

 ossification, and the ossific matter deposited in fine bony 

 fibres radiating therefrom. 0. C. 132. Hunterian. 



A. 135. The parietal bone of a Human Foetus, showing its 

 vascularity and the radiation of the osseous fibres from the 

 centre. 0. C. 162 A, Mus< Sir Astley Cooper, Bart, 



