THE EFFECT OF A FREEZE ON PAPAYA FRUITS. 
The Florida freeze of February 3, 1917, occurred early in the 
morning, the temperature dropping to +26.5° F. just before 
sunrise. Almost immediately the green papaya fruits became 
studded with drops of coagulated papain which issued by the 
thousand from breaks in the thin skih. The photograph here 
reproduced was taken at about 10 o'clock on the morning of 
the freeze. Few plants would appear to be more ideal for use 
than this papaya (Carica papaya) in the studies which are 
urgently needed into the physiology of death by freezing. 
(Photographed by David Fairchild at Miami, Fla., February 
3, 1917; P20390FS.) 
