394 



ANOMALOUS MODES 



Chap. XI. 



f 



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segregation. When, however, the later flowers or fruit, produced 

 during the same season or during a succeeding year or genera- 

 tion, become striped or half-in-half, &c, the segregation of the 

 two colours is strictly a case of reversion by bud-variation. In. 

 a future chapter I shall show that, with animals of crossed 

 parentage, the same individual has been known to change its 

 character during growth, and to revert to one of its parents 

 which it did not at first resemble. From the various facts now 

 given there can be no doubt that the same individual plant 

 whether a hybrid or a mongrel, sometimes returns in its leaves 

 flowers, and fruit, either wholly or by segments, to both parent- 

 forms, in the same manner as the Cytisus adami, and the 

 Bizzarria Orange. 



We will now consider the few facts which have been recorded 

 in support of the belief that a variety when grafted or budded 

 on another variety sometimes affects the whole stock, or at 

 the point of junction gives rise to a bud, or graft-hybrid, which 

 partakes of the characters of both stock and scion. 



It is notorious that when the variegated Jessamine is budded on the 

 common kind, the stock sometimes produces buds bearing variegated 

 leaves : Mr. Kivers, as he informs me, has seen instances of this. The same 

 thing occurs with the Oleander. 110 Mr. Eivers, on the authority of a trust- 

 worthy friend, states that some buds of a golden-variegated ash, which 

 were inserted into common ashes, all died except one; but the ash- 

 stocks were affected, 111 and produced, both above and below the points of 

 insertion of the plates of bark bearing the dead buds, shoots which bore 

 variegated leaves. Mr. J. Anderson Henry has communicated to me a 

 nearly similar case : Mr. Brown, of Perth, observed many years ago, in a 

 Highland glen, an ash-tree with yellow leaves ; and buds taken from this 

 tree were inserted into common ashes, which in consequence were affected, 

 and produced the Blotched BreadaTbane Ash. This variety has been propa- 

 gated, and has preserved its character during the last fifty years. Weeping 

 ashes, also, were budded on the affected stocks, and became similarly 

 variegated. Many authors consider variegation as the result of disease ; 

 and on this view, which however is doubtful, for some variegated plants 

 are perfectly healthy ^ and vigorous, the foregoing cases may be looked at 

 as the direct result of the inoculation of a disease. Variegation is much 

 influenced, as we shall hereafter see, by the nature of the soil in which the 



110 Gartner (' Bastarderzeugung,' s. 

 611) gives many references on this sub- 

 ject. 



111 A nearly similar account was given 

 by Bradley, in 1724, in his ' Treatise on 

 Husbandry,' vol. i. p. 199. 



