Mr. Knight on the Variegation of Vlants. 269 



in the succeeding spring, many seedling plants. These plants, 

 which were raised in a hot-bed, presented no singularity of cha- 

 racter on their first appearance ; but early in the succeeding sum- 

 mer I had the pleasure to observe purple stripes in the seed- 

 leaves of several of them ; and in the autumn the leaves of 

 many were variegated. I did not however obtain a single plant 

 which promised to produce, or has subsequently afforded, either 

 coloured fruit, or coloured leaves, free from variegation. 



When, on the contrary, I have introduced the farina of a 

 black, or purple grape into the blossom of a white one, none of 

 the plants I obtained have ever been variegated ; and the colour 

 of the leaves and fruit, which these in the first year afforded, in- 

 dicated with certainty the colour of all the produce of such va- 

 rieties, in whatever soil cuttings taken from them were subse- 

 quently planted. But in the variegated vines the result has 

 been wholly different ; and though the leaves and fruit first pro- 

 duced by some of them contained more tingeing matter than 

 any of the coloured kinds, they subsequently produced, even 

 on the same tree, some bunches almost entirely black, others 

 perfectly white, others lead-coloured with stripes of white, and 

 others white with minute black stripes ; and grapes of all the 

 preceding colours are very frequently seen on the same cluster. 

 The leaves are also subject to the same variations, and the co- 

 lours in them are in some instances confined to the upper, in 

 others to the under surface, and sometimes extend quite through; 

 and both the leaves and fruit of some of the branches have be- 

 come permanently colourless. 



It appears * herefore obvious, that the tingeing matter of varie- 

 gated grapes, though probably not essentially different from that 

 of others, is differently combined, and united to the plant j and 

 as the variegated grape afforded offspring similar to itself, and 



none 



