PLATE 3 
Reaction of Marquis and Kota and of F3 families of the Marquis X Kota cross to 
biologic Form XXVII. 
A. —^Kota, showing immunity represented by infection of type o. 
B. —^Marquis, showing resistance which classifies it in the immime-resistant group. 
C. ^—^Immune family. 
D. —Resistant family. 
E. —Susceptible family. 
