A Genetic Study of Plant Height in Phaseolus Vulgaris. 53 
Fig. 15. — Representative plants of (A) a race of short bush beans, Longfellow, 
and (B) a race of tall bush beans, Tallbush, established from a cross 
between Longfellow and a tall pole bean. 
The very tall bush-bean type, isolated as noted above (Family 
3,251) from a cross between a rather short bush bean and a fairly 
tall pole bean, has been grown for some generations and found to 
be fairly constant. The race will be known here as Tallbush. 
Since Tallbush inherited its tallness from a tall pole bean (the 
other parent race being a short bush bean), it is of interest to 
note that it transmits tallness to a part of its pole-bean progeny 
when crossed with a very short pole bean. 
The short pole bean chosen for one parent of this cross was 
Snowflake and the plants used were directly descended from those 
employed in the crosses with Red Marrow, Triumph, and July, 
discussed earlier in this paper. The Tallbush plant used in this 
cross was a direct descendant one generation removed from the 
F4 family 3,251 of the Longfellow-Fillbasket cross noted above. 
In 1912 the parents and Fi of the Snowflake-Tallbush cross 
were grown in the garden along with the plants recorded in Tables 
4 and 5. The following winter a few plants of both parent races, 
a single plant of Fi and a considerable number of plants of F2 
of the cross, were grown in the greenhouse in 6-inch pots of rich 
soil under conditions of temperature and moisture favorable to 
rather excessive length growth. 
