302 Retrograde Varieties 



position of the hybrid offspring for any single 

 instance, irrespective of the morphological 

 nature of the qualities involved. " 



Mendel has proved the correctness of these 

 deductions by his experiments with peas, and 

 by combining their color (yellow or green) with 

 the chemical composition (starch or sugar) and 

 other pairs of characters. I will now give two 

 further illustrations afforded by crosses of the 

 ordinary campion. I used the red-flowered or 

 day-campion, which is a perennial herb, and a 

 smooth variety of the white evening-campion, 

 which flowers as a rule in the first summer. 

 The combination of flower-color and pubescence 

 gave the following composition for the second 

 hybrid generation: 



Number % Calculation 



Hairy and red 70 44 56.25% 



Hairy and white 23 14 18.75% 



Smooth and red 46 23 18.75% 



Smooth and white ... . 19 12 6.25% 



For the combination of pubescence and the 

 capacity of flowering in the first year I found : 



Number % Calculated 



Hairy, flowering 286 52 56.25% 



Hairy, without stem . . 128 23 18.75% 



Smooth, flowering 96 17 18.75% 



Smooth, without stem 42 8 6.25% 



Many other cases have been tested by dif- 

 ferent writers and the general result is the 



