CuAr. V. 



NEMOPHILA INS1GNIS 



183 



seeds ; so that the seeds per capsule were as 100 to 69.* The 

 crossed seeds weighed a little less than an equal number of self- 

 fertilised seeds, in the proportion of 100 to 105 ; but this was 

 clearly due to some of the self-fertilised capsules containing very 

 few seeds, and these were much bulkier than the others, from 

 having been better nourished. A subsequent comparison of the 

 number of seeds in a few capsules did not show so great a 

 superiority on the side of the crossed capsules as in the present 

 case. 



The seeds were placed on sand, and after germinating were 

 planted in pairs on the opposite sides of five pots, which were 

 kept in the greenhouse. When the seedlings were from 2 to 

 8 inches in height, most of the crossed had a slight advantage 

 over the self-fertilised. The plants were trained up sticks, and 

 thus grew to a considerable height. In four out of the five 

 pots a crossed plant flowered before any one of the self-fertilised. 



Table LXXII. 

 NemophUa insignis; means that the plant died. 



* Several species of Polemo- 

 niaceso are kno vn to be proter- 

 androus, but I did not attend to 

 this point in Nernophila. Verlot 



says (' Des Varie'te's,' 1865, p. 6C>) 

 that varieties growing near on 

 another spontaneously intercross. 



