BONES 



307 



(b) Correction for the percentage of water after maceration. 

 At birth the oven-dried macerated bones show 0.6 per cent less 

 water than those mechanically cleaned. This deficiency increases 

 at the rate of 0.04 per cent for each 5 grams in body weight up 



Chart 53 Percentage of water in the oven-dried bones of fore limb, on body 

 weight (albino rat). Table 162. 



Humerus. Carpus plus foot bones. The graph for the ulna plus 

 radius coincides nearly with that for the carpus, and is therefore omitted. 



Chart 54 Percentage of water in the oven-dried bones of hind limb, on body 

 weight (albino rat). Table 163. 



Femur. X Tibia and fibula. Tarsus and foot bones. 



to 150 grams. At this body weight it amounts to 1.8 per cent and 

 this deficiency persists in the heavier rats. The true percentage 

 of water can therefore be approximated by applying these 

 corrections to the values in the tables. 



