170 



COLLOIDS IN BIOLOGY AND MEDICINE 



box. In the first instance it absorbs approximately 10 per cent of its 

 weight in the first 25 hours, then shrinking occurs. The ice box 

 heart, on the contrary, immediately begins to lose water, and at the 



Hours 

 Swelling of Horse Heart 3 or 4 Hours.Post Mortem 



FIG. A. 



end of 45 hours has lost by shrinkage about 55-75 per cent of its 

 water. 



Typical are curves, Figs. C } D, E, which show comparatively 



Hours 



Swelling of Horse Heart after Cold Storage for 

 3 or 4 Hours 



FIG. B. 



butcher's meat, cold storage meat and hare, which have been kept a 

 year at - 10. In actual practice the method is to weigh morsels of 

 meat of as nearly the same size as possible, and after placing them in 

 salt solution, at hourly intervals, to determine the changes in weight. 



