Pete DYSON: 9 
of the parent plants had been very carefully noted, and as these 
were still growing it was hoped to compare the new generation 
with them, while less attention had been paid to these other few 
plants. 
I had not made a point of collecting seed from the other lot. 
but sufficient had been taken from a few of the plants, for the 
fourth hybrid generation, and on another part of the farm enough 
were grown to indicate the distribution of the characters (tables 
IV, IX and XII). 
ON THE ARRANGEMENT OF THE PLANTS. 
The original plants and the first hybrid generation were set 
out in numbered beds and nanied by letters of the Greek alphabet. 
But as the number of plants which could be so named in any bed 
was thus limited, by the number of letters available, and the 
naming was somewhat cumbersome, I adopted for the second and 
subsequent generations another system, which I will shortly 
describe, as it is so. well suited for work of this kind, and I have 
not seen anything similar referred to in accounts of breeding 
experiments. 
The plants were arranged in rows, about two feet apart or 
more. In each row were 10 plants, and 10 rows constituted a 
rectangular bed. The rows were numbered 0 to 9, and the 
plants in each row, from left to right, also 0 to 9. No labels 
were affixed, except here and there, if experience showed on 
account of overcrowding or irregular growth, a plant might be 
wrongly numbered. Each plant in fact has a number depending 
only on its position in the bed, thus the 4th plant of the 6th row 
would be No. 53 of that bed. The first plant of the bed is 00. 
The last 99. The beds of any one lot were also numbered, and 
by using also the registered number of the whole lot of seeds, the 
position and origin of any plant was defined and could be easily 
and shortly written down. Thus fig. 16 is from the photograph 
of a plant No. 2321, 7.e., the second plant of the 3rd row in the 4th 
bed of lot 2, the position of which is shown in the plan (X). Fig. 
17 is of No. 2188, the 9th plant of the 9th row of the 2nd bed of 
