42 Nebraska Agricultural Exp. Station, Research Bui. 7. 
Internode No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
July-Snowflake 24 20 21 24 26 30 35 41 46 51 56 61 65 66 68 
Snowflake 26 22 21 22 22 23 25 28 31 34 37 41 44 47 48 
Ratio 100: 103 110 100 92 85 77 71 68 67 67 66 67 68 71 71 
Internode No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
July-Snowflake 24 20 21 24 28 30 35 41 46 51 56 61 65 66 68 
Red Marrow-Snowflake. . 25 22 23 26 28 30 34 38 42 45 48 51 54 55 56 
Ratio 100: 104 110 110 108 108 100 97 93 91 88 86 84 83 83 82 
Internode No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
July-Snowflake 24 20 21 24 26 30 35 41 46 51 56 61 65 66 68 
Triumph-Snowflake 21 18 19 20 21 23 25 28 31 33 35 37 38 39 39 
Ratio 100: 88 90 90 83 81 77 71 68 67 65 63 61 58 59 57 
Internode No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
Red Marrow-Snowflake. . 25 22 23 26 28 30 34 38 42 45 48 51 54 55 56 
Triumph-Snowflake 21 18 19 20 21 23 25 28 31 33 35 37 38 39 39 
Ratio 100: 84 82 83 77 75 77 74 74 74 73 73 73 70 71 70 
From these comparisons, it is seen that the differences in 
potential internode length between the bush beans, Triumph and 
Red Marrow, and the pole beans, July and Snowflake, as indicated 
by the previous comparisons of mean lengths of the first five 
internodes, are realized roughly in crosses between the bush and 
the pole beans. Thus the internode length of the Triumph- 
Snowflake cross is less than that of Snowflake, but the difference 
is not so great as that between Triumph and Snowflake. The 
mean-length ratio of Snowflake to Triumph, for the first five 
internodes, was 100:64 and that of Snowflake to the Triumph- 
Snowflake cross, for the first 15 internodes, was 100:81. The 
cross, therefore, occupied a position intermediate between its 
parents with respect to internode length, which was to have been 
expected. 
Again, the direct comparisons indicated that the internode 
length of Red Marrow was potentially greater than that of 
Snowflake but less than that of July. The Red Marrow-Snowflake 
cross showed that this was true. The mean-length ratio of the 
Red Marrow-Snowflake cross to Snowflake, at the end of the 
fifteenth internode, was 100:86, while that of the July-Snowflake 
cross to Snowflake was 100:71 and that of July to Snowflake was, 
as shown earlier, 100:52. That is, the Red Marrow-Snowflake 
cross had an internode length greater than that of Snowflake, 
but the difference between Snowflake and the Red Marrow- 
Snowflake cross was not so great as the difference between Snow- 
flake and the July-Snowflake cross, which in turn, of course, was 
not so great as the difference between July and Snowflake. 
That the potential internode length of Red Marrow is less than 
that of July is also shown by the comparison between the July- 
Snowflake and Red Marrow-Snowflake crosses, the length-ratio 
of which, for the first 15 internodes, was 100:82. 
