C ^7 ) 
ufing a Wooden Leg, than any other, fince the MufcuU 
fiexores & extenfores Ttli(Z aft alternately in each ftep, 
which is fufficienc to hinder the growing together of 
the Joynt. 
From this Obfervation our Author confirms what he 
had before advanced of the Bones being united in the 
Womb, concluding that this proceeded from the Knee 
of the Foetus being too much bent and preft againft the 
Thigh-bone, and To united as he had explained that of 
the Backbone and Ribs. He concludes all with grant- 
ing, that fome Peribns of an hot Temperament have 
ihm Aorta near the Heart Bony, the Sinus % of the 
Brain, or the like ; that fome Cartilages and Ligaments 
become Bony in very old Men, that Tome parts of the 
Body may have acquired fome degree of Bonynefs,which 
afterwards become more folid by drying in the Earth : 
Never thelefs he is not fatisfied how his Subjefts ftiould 
become Bony in fome and not io other Parts, except it 
be granted that the Fibres of fome iParts were from their 
firft formation in the Womb more united than others, 
which afterwards gave occafion to their Offification. 
Fig. I. 
Reprefents the Sceleton with 
Vertebrae of the Back 
and Rihs united, 
aaaa, bbbb, cc. TheVct- 
tebr^ of the Neck, Back^ 
and Ofla Illium,^ /S' joyned 
together. 
d d d d. Several of the Ribs 
united to the Back- hone. 
Fig. IL 
The Thigh and Leg-Bones 
united together at the 
Rnee. 
ggg. The place iohere the 
Os Fepfioris and Tibise ^ 
were united. 
V. Mr, 
