242 IOWA ACADEMY OF SCIENCE Vor.. XX\\ I'JlS 



Seeds have been planted, and wliat tliey will develop into will 

 be watched with interest. 



A somewhat similar case was found by one of us near Hamil- 

 ton. Illinois, in 1918. 



It is povSs.ible that some one has recorded this variation before. 

 Dr. C. S. Sar<i:ent in describing- Juglans nigra says "oblon,2: or 

 slightly pyriforni"^ 



At the meeting of the Iowa Academy in Ames. Mr. Paul Rowe 

 of Indianola called attention to a variation in the black walnut. 

 The two examples of variation show some deviation from the 

 usual type. In one case the greatest dimension is from stem to 

 blossom, giving a form approaching the mutan:: described in this 

 paper; the second nut has greatest dimension "at right angles 

 to the plane of division of the nut." This is another interestirjg 

 variation. 



^Manual of the Trees of North America, 128. 



