904 



5861. (Slide 6.) A series of the deciduous teeth of a Child "from their being 

 complete to their utmost decay :" there is also a deciduous incisor of a Horse, 

 with the germ of the permanent incisor about to succeed it. 



The Human teeth are the subjects of figs. 2 and 3. pi. xv. Op. tit. 



5862. (Slide, Div. 7.) " The teeth of one side of both jaws, from a Child of five or 

 six years of age." 



The deciduous incisors are completed, and the crowns of their successors formed. The 

 fang of the deciduous canine is not quite complete, and the crown of the successor is about 

 half-formed. The fangs of the first milk-molars are nearly completed, and the summit of the 

 first upper premolar has begun to be calcified. The fangs of the second milk-molar are 

 half-formed and widely open : the second premolar has not begun to be calcified. The 

 crown of the first true molar is more than half-formed. 



These are the subjects of fig. 1 . pi. x. Op. cit. 



5863. (Slide, Div. 8.) " The teeth of one side of both jaws, from a Child of seven 

 years of age." 



The fang of the first deciduous incisor is partially absorbed, more in the upper than the 

 lower tooth : part of the fang of the succeeding incisor is formed. Of the second incisor a smaller 

 proportion of the fang of the deciduous tooth is absorbed, and of that of the permanent one is 

 developed. The whole of the deciduous canine, and of the crown of the permanent one, are 

 completed. The fangs of the upper milk-molars are more absorbed than those of the lower 

 ones, and the crowns of the upper premolars are proportionally more advanced. The whole 

 of the crown with the beginning of the root of the first true molar is now formed. These 

 teeth form the subjects of fig. 2. pi. x. Op. cit., and in the description of the plate the 

 Author remarks, " This is an age in which there are more teeth formed and forming than at 

 any other time of life : forty-four in the whole." 



5864. (Slide, Div. 9.) " The teeth from one side of both jaws of a Child eight or 

 nine years old, principally to show the progress of the second set and the be- 

 ginning and decay of the first set." 



The first deciduous incisor of the lower jaw has been shed, and the crowns of the second 

 permanent molars have been formed. The fangs of the first true molars are more lengthened, 

 and those of the milk -molars more absorbed. 



These teeth form the subjects of fig. 1. pi. xi., and, according to Hunter's own showing, 

 a greater number of formed and forming teeth coexist in the jaws of a child at the age here 

 exemplified than at that characterized by the teeth in No. 5863. As the crowns of the second 

 true molars are always more or less calcified before any of the deciduous incisors are shed, the 



