CHAP. V. . LUPINUS PILOSUS. 149 



the two crossed plants were about 3 inches taller than the four 

 self-fertilised plants; they looked also more vigorous and pro- 

 duced many more pods. 



Two other crossed and self-fertilised seeds of the same lot, 

 after germinating on sand, were planted on the opposite sides of 

 & large pot, in which a Calceolaria had long been growing, 

 and were therefore exposed to unfavourable conditions: the 

 two crossed plants ultimately attained a height of 20i and 

 20 inches, whilst the two self-fertilised were only 18 and 9J 

 inches high. 



LUPINTJS PIL08U8. 



From a series of accidents I was again unfortunate in obtaining 

 a sufficient number of crossed seedlings ; and the following 

 results would not be worth giving, did they not strictly accord 

 with those just given with respect to L. luteus. I raised at first 

 only a single crossed seedling, which was placed in competition 

 with two self-fertilised ones on the opposite side of the same 

 pot. These plants, without being disturbed, were soon after- 

 wards turned into the open ground. By the autumn the crossed 

 plant had grown to so large a size that it almost smothered 

 the two self-fertilised plants, which were mere dwarfs; and 

 the latter died without maturing a single pod. Several self- 

 fertilised seeds had been planted at the same time separately 

 in the open ground ; and the two tallest of these were 33 and 

 32 inches, whereas the one crossed plant was 38 inches in height 

 This latter plant also produced many more pods than did any 

 one of the self-fertilised plants, although growing separately. A 

 few flowers on the one crossed plant were crossed with pollen 

 from one of the self-fertilised plants, for I had no other crossed 

 plant from which to obtain pollen. One of the self-fertilised 

 plants having been covered by a net produced plenty of spon- 

 taneously self-fertilised pods. 



Crossed and self-fertilised Plants of the Second Generation. From 

 crossed and self-fertilised seeds obtained in the manner just 

 described, I succeeded in raising to maturity only a pair of 

 plants, which were kept in a pot in the greenhouse. The crossed 

 plant grew to a height of 33 inches, and the self-fertilised to 

 that of 26J inches. The former produced, whilst still kept in 

 the greenhouse, eight pods, containing on an average 2*77 seeds; 

 and the latter only two pods, containing on an average 2 - 5 

 seeds. The average height of the two crossed plants of the two 



