156 



"If we admit as true M. Adam's account, we must admit 

 the extraordinary fact that two distinct species can unite by 

 their cellular tissue, and subsequently produce a plant bear- 

 ing leaves and sterile flowers intermediate in character be- 

 tween the scion and the stock, and producing buds liable to 

 reversion; in short, resembling in'every important respect a 

 hybrid formed in the ordinary way by seminal production," 



It may be interesting to mention here that Macfarlane 

 has examined the anatomical details of the tissue of this 

 alleged grafted hybrid and it shows a remarkable mingling 

 of the two parent forms. 



In addition to this there is the famous Bizzario orange, 

 which is said to offer a strictly parallel case. It is said that 

 the tree produces at the same time leaves, flowers and fruit 

 identical with the bitter orange and the citron of Florence; 

 also fruit with the two kinds blended together both externally 

 and internally. 



It is said when the variegated Jessamine is budded with 

 the common kind, the stock sometimes produces buds bear- 

 ing variegated leaves. 



We may mention here the instance of the Jerusalem 

 artichoke {Helianthus tuberosus) which was grafted on the 

 common sunflower {H. a%nuus). It was stated that the snti- 

 flower had acquired from the artichoke the habit of producing 

 tubers. Voechting has lately repeated this experiment, but 

 failed to get results anything like those recorded above for 

 the sunflower. 



On the whole, I think it may be questioned whether 

 there is such a thing as a genuine grafted hybrid; it is best 

 to suspend judgment until these are produced by actual 

 experiment. Most of these statements rest upon the stories 

 related by gardeners, and these are not always trustworthy. 



