258 



IOWA ACADEMY OF SCIENCE Vol. XXVI. 191'» 



Fig. 91. — A subterranean tomato. ThLs tomato was a Field's Red Head, grown 

 in the greenhouse, started in the fall of 1018. On February 12, 1919, while 

 Mr. Robert Billings was working the soil around the roots lie called my attention 

 to the formation of tlie under-ground tomato. The pluDtograph was taken three 

 weeks later. 



