90 



G. Marotti, F. Marotti 



The data relating to 4 dogs operated when two-month old and sacrificed 20, 60, 

 180 and 360 days after the operation are shown in Fig. 1. On the left in Fig. 2, are 

 shown the results obtained from two dogs operated when four months old and sacri- 



Fig. 1 



I 1 r/'g/it (control) 

 ^left 



Mx 21.91 

 t^ri 6.3 



Mx in 



Mn 5.5 



iJj 



ficed after 20 and 60 days respectively. On the right in Fig. 2, are shown the data 

 from two other dogs operated when 3 years old and sacrificed at 60 and 360 days. In 

 all the diagrams, the various pairs of bones studied in the inert (left) and mobile 



