FREEZE-DRY PRESERVATION — HOWER 



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Table 6. — Freezing mixtures (PS = primary substance and its proportion; 

 SS = secondary substance and its proportion; TS = tertiary substance and its 

 proportion; A = temperature (° C throughout) of substance before mixture; 

 B = temperature of mixture; C = total reduced temperature; D = temperature 

 when all snow is melted (when snow is used) ; E = heat absorbed (calories when 

 A is grams); * = lowest temperature obtained. Table modified from "Smith- 

 sonian Physical Tables," 1959, 9th rev. ed., by W. E. Forsythe. 



