What Puts “Pop” in Pop Corn. 267 
Photomicrograph 2.—Showing contents of the expanded starch cell due to popping 
of corn. The outline of cell wall can be distinguished by the 
black lines. X 50 by Dr. HB. G. Mahin. 
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~ 
: s ed 
* .Y i 4 a % 
ee his. 
Photomicrograph 3.—Showing higher magnification than number 2. X 100 by 
Dr. E. G. Mahin. 
