| Popis: |
In the year 1858 Magitot, a French histologist, claims to have found within the follicle of a developing tooth a special organ for the development of the cementum. In 1861 Robin and Magitot made a presentation of the same facts anew. With the exception of these authors, I am not aware that any other authority has recognized the presence of this special organ; while such men as Kolliker, Waldyer, Herz and others have formerly denied its existence. In my own investigations I have not been able to trace it with certainty, although there are appearances in a fully formed follicle of a tissue under the calcifying dentine germ between it and the outer covering of the sacculus that might admit of the supposition of the existence of sũch an organ. I have noticed this appearance in sections from embryos from the pig and the calf. At a later stage, where |
