PLATE 6 
i, 2.—Sections of a green tomato fruit showing carpellary surface proliferations due 
to ammonium carbonate (20 per cent solution). Time, 10 days. Injected on June 10. 
Photographed on June 20, 1916. X7. It is probable that only vapors from the car¬ 
bonate touched these places, otherwise there would have been woundings. 
3.—Inner face of carpel of a green tomato fruit showing numerous mulberry-like 
white surface proliferations due to the injection of ammonium acetate (20 per cent 
solution). Carpel surface uninjured—that is, there were no dead specks in the pale 
green carpel wall either between these proliferations or under them. Photographed 
on June 22, 1916. Time, 12 days. X14. 
