Pisum sativum—­offspring from a cross between two closely allied varieties, compared with the self-fertilised offspring of one of the varieties, or with intercrossed plants of the same stock: 
  ? :  :  ? :  :  60 to 75.

Lathyrus odoratus—­offspring from two varieties, differing only in colour of their flowers, compared with the self-fertilised offspring of one of the varieties:  in first generation: 
   2 :  79.25 :  2 :  63.75 :  80.

Lathyrus odoratus—­offspring from two varieties, differing only in colour of their flowers, compared with the self-fertilised offspring of one of the varieties:  in second generation: 
   6 :  62.91 :  6 :  55.31 :  88.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth self-fertilised generation, in height: 
  21 :  50.05 :  21 :  33.23 :  66.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth self-fertilised generation, in weight: 
  .. :  .. :  .. :  .. :  23.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth self-fertilised generation, grown in open ground, in height: 
  10 :  36.67 :  10 :  23.31 :  63.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth self-fertilised generation, grown in open ground, in weight: 
  .. :  .. :  .. :  .. :  53.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth self-fertilised generation, grown in open ground, in fertility: 
  .. :  .. :  .. :  .. :  46.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth intercrossed generation, in height: 
  21 :  50.05 :  22 :  54.11 :  108.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth intercrossed generation, in weight: 
  .. :  .. :  .. :  .. :  101.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth intercrossed generation, grown in open ground, in height: 
  10 :  36.67 :  10 :  38.27 :  104.

Petunia violacea—­offspring of plants self-fertilised for four generations and then crossed by a fresh stock, compared with plants of the fifth intercrossed generation, grown in open ground, in weight: 
  .. :  .. :  .. :  .. :  146.