326 Influence of Stock and Graft. 



flowers than the other varieties, which are of a golden-yellow color ; flashed 

 dark orange ; is well worthy of a place in the garden, being always in bloom. 

 As yet, no double varieties have been produced. 



Zinnia tagetiflora fl. pi. — This variety is classed among the novelties of 

 1869, giving all the colors and shades of Zinnia ekgans hybrida. The 

 flowers are pompon-shape, and double as asters and chrysanthemums, and 

 of particular beauty. 



Zinnia elegans pumilafl. pi. — Another novelty, having the same varieties 

 and brilliant tints and double flowers as the others. It is of great value 

 on account of its dwarf habit, attaining to the height of only a foot to a 

 foot and a half It is an excellent acquisition for massing or ribbon- 

 borders. 



INFLUENCE OF STOCK AND GRAFT. 



It was formerly believed that the influence of the stock on the graft was 

 very slight in its effect on the fruit ; but more careful observation shows 

 that it is greater tlian had been previously suspected ; but further observa- 

 tion is necessary to a final, satisfactory solution of the question. There 

 are some varieties of pears, like the Wilkinson, which it is extremely diffi- 

 cult to graft. The wood of this variety is rarely cylindrical ; the section 

 having a flattened, oval shape. The Delight of Hardenpont (the true or 

 Belgian variety) is another kind which does not readily take the graft. In 

 attempting, some years since, to graft some large Siberian crab trees in the 

 limbs, with russet apples, we found it extremely difficult to procure a union. 

 In these instances, the pith of the tree was far away from the centre, though 

 the section was circular. Then there are certain fruits, such as the Law- 

 rence Pear, which are very difficult to suit with stocks. The injurious ef- 

 fect which some grafts appear to exercise on the stock, in many instances 

 wholly destroying it, is very singular, especially as this effect is produced 

 only when they are grafted into the limbs, and not when a bud is inserted- 

 in a young stock in the nursery, though such varieties, being usually not 

 of vigorous growth, do not make large trees under any circumstances. 



