166 



SAROTHAMNUS SCOPARIUS. 



CIIAP. \" 



fertilised 1 ' 33 inches in height ; so that the former "were more 

 than twice as high as the latter, or as 100 to 46. 



In the spring of the succeeding year (1869) the three crossed 

 plants in Pot I. had all grown to nearly a foot in height, and they 

 had smothered the three little self-fertilised plants so completely 

 that two were dead ; and the third, only an inch and a half 

 in height, was dying. It should be remembered that these 

 plants had been bedded out in their pots, so that they were 

 subjected to very severe competition. This pot was now thrown 

 away. 



The six plants in Pot II. were all alive. One of the self- 

 fertilised was an inch and a quarter taller than any one of the 

 crossed plants ; but the other two self-fertilised plants were in a 

 very poor condition. I therefore resolved to leave these plants to 

 struggle together for some years. By the autumn of the same 

 year (1869) the self-fertilised plant which had been victorious 

 was now beaten. The measurements are shown in the following 

 table : 



TABLE LIX. 

 Pot H. Sarotliamnus scoparius. 



The same plants were again measured in tho autumn of the 

 following year, 1870. 



TABLE LX. 

 Pot II. Sarothamnus scoparius. 



