MUTUAL INFLUENCE OF THE STOCK AND GRAFT. 129 



the other, so that they ultimately become soldered together; the most 

 singular thing with reference to this union was, that the red carrot with 

 its small, overgrown part above the juncture, took the color and large 

 dimensions of the White Belgian, which, in like manner, with its larger 

 head above the joining, took the color and small dimensions of the red one 

 at and below the union. The respective qualities of the two roots were 

 thus transposed, while the upper portions or crowns were unaffected; the 

 root of one, naturally weak, became distended and enlarged by the abun- 

 dant matter poured into it by its new crown; and in like manner the root 

 of the other, naturally vigorous, was starved." 



In the Gardeners' Chronicle for 1878, page 662, is recorded an experi- 

 ment by M. Lindemuth, in which a shoot of a variety of potato having 

 violet-colored foliage was grafted on a shoot of a variety having the 

 the ordinary green foliage. The stock, which had been cut off about three 

 inches from the ground, took on, in about two weeks after the operation, a 

 lively carmine red color, while the growing scion was of a more violet 

 tinge. The author claims to be the first to observe the transfer of coloring 

 matter into a green axis. 



In the same journal for 1873, page 645, is a report of some experiments 

 in grafting the potato made by M. Magnus of Berlin. "He obtained 

 some young plants from cuttings and grafted them with different varie- 

 ties. All the tubers produced after the grafting showed the effect of the 

 grafting, especially in the color. When a black variety had been grafted 

 on a white, or a red on a black, and vice versa, the new tubers were in 

 point of color intermediate." 



In Garden and Forest, 1890, page 101, Professor L. H. Bailey, reports 

 the following case: " Prunus Pissardi gave me much more highly colored 

 foliage when grafted upon Prunus Americana than upon Prunus domes- 

 tica. The scions came from the same tree, and the grafted trees stood in 

 the same row. Any acceleration in the ripening of fruit is apt to cause 

 high color, but the intensification of color in Prunus Pissardi was not 

 due to such cause, as the the grafts were more vigorous upon Prunus 

 Americana. 



Geokge W. Campbell of Ohio states in the Report of the Michigan 

 Pomological society for 1877, page 451, that the flowers of a light colored 

 rose grafted on a dark variety became nearly as dark as those of the stock, 

 but that there was no other change. 



In the Revue Horiicole fop 1889, page 515, the editor of that journal 

 quotes Wm. Falconer of Long Island as having grafted a Marechal Niel 

 rose with the Mermet and obtained flowers differing from either of these 

 varieties but resembling the Gloire de Dijon. Peter Henderson doubted 

 this. 



Dr. M. T. Masters exhibited before the Linnsean society of London, in 

 1869 (Proceedings 1868-9, p. 27), a spray of holly bearing orange-colored 

 berries which was a graft of a yellow-fruited variety on a red-berried stock. 



The same writer states in the Gardeners' Chronicle for 1872, page 322, 

 that the purple-leaved Corylus Avellana sometimes, but not always, trans- 

 fers its color to the stock when grafted on the ordinary form. 



On the other hand, George Paul, in the same journal for 1876, page 474, 

 observed the following case in which a green-leaved stock appeared to par- 

 tially overcome the variegation of the graft: A scion of the purple birch 

 was winter-grafted on the common birch stock, and from the scion were 

 produced several buds of the purple birch, one of which was allowed to 

 17 



