236 



PHALARIS CANARIENSIS. 



CHAP. VL 



foot in height they were measured, and the crossed plants 

 averaged 13 '38, and the self-fertilised 12 '29 inches in height; 

 or as 100 to 92. 



When in full flower they were again measured to the ex- 

 tremities of their culms, as shown in the following table : 



TABLE XCVIH. 



Phalaris canariensis. 



The eleven crossed plants now averaged 38 9, and the eleven 

 self-fertilised plants 35 -69 inches in height; or as 100 to 92, 

 which is the same ratio as before. Differently to what occurred 

 with the maize, the crossed plants did not flower before the self- 

 fertilised; and though both lots flowered very poorly from 

 having been kept in pots in the greenhouse, yet the self-fertilised 

 plants produced twenty-eight flower-heads, whilst the crossed 

 produced only twenty ! 



Two long rows of the same seeds were sown out of doors, and 

 care was taken that they were sown in nearly equal number : 

 but a far greater number of the crossed than of the self-fertilised 

 seeds yielded plants. The self-fertilised plants were in con- 

 sequence not so much crowded as the crossed, and thus had an 

 advantage over them. When in full flower, the twelve tallest 

 plants were carefully selected from both rows and measured, 

 as shown in the following table : 



