The Origin of Linaria Vulgaris Pcloria. 209 
numerable flowers with a single spur ; in the second year, 
however, two appeared. I collected the seeds of these 
plants in 1889. 
From this I raised the third generation in 1890. Here 
again the plants did not flower till the second year, and 
again there was one case of a Pcloria amongst thousands 
of normal flowers. I harvested the fruits of this peloric 
plant separately and it furnished me with sufficient seed 
for the culture of 1892. 
This year I adopted the plan of sowing the seeds in 
pans, containing good garden soil, in the greenhouse of 
my laboratory. Hitherto I had simply sown the seed in 
the bed, for which method, however, a much larger 
quantity of seed is required. The seedlings were planted 
out singly in pots containing richly manured soil as soon 
as they began to develop a hypocotylous bud ; then they 
were kept under glass, and were not transferred to the 
open bed until June. The result was that they not only 
flowered in the first year, but did so very luxuriantly. 
There were about twenty individuals in all. On one 
of these I saw a single peloric flower at the end of 
August. In the autumn I pulled up all the plants except 
two, one of which had exhibited the peloria. These two 
plants flowered in the following year in complete isola- 
tion, a profusion of flowers being borne on the freely 
branched stems, but they did not then develop a single 
peloric flower. They produced 13cc of seeds, an abun- 
dant harvest. I sowed a small proportion of this in the 
following year, and as it gave rise to the Linaria inil- 
garis peloria I was looking for, I sowed the rest in 1896, 
and some again in 1899. 
Before we proceed to give an account of this main 
section of the experiment let us briefly summarize the 
