PLATE 4 . 
The reaction of certain MindumX Pentad F3 families to biologie Form XXXIV, 
A, B.—^Two F3 families (8o9;-2i and 805-16, respectively) from white-seeded parents, 
immune from Form I and resistant to Form XXXIV. 
C. —Family 796-4, from red-seeded parents and similar in reaction to A and B. 
D. —Family 806-^4, which was heterozygous to Form I and resistant to Form 
XXXIV. 
E. —Family 804-7, which was highly susceptible to both forms of rust. 
F. —Family 809-8, which fell into the near-susceptible class with Form I and in 
the near-resistant class with Form XXXIV. 
