202 ON GRAFTING. 



taken of the period when this sap is in full flow, to effect 

 the junction of the two plants. 



M. Chondi has distinguished himself by the numerous 

 experiments he has made in the art of grafting : he di- 

 vides the plants susceptible of undergoing this operation 

 into three classes. 



1. The Unitiges, or plants having one central and ver- 

 tical stem, such as firs, larches, and most evergreens. 

 In these it is the stem which must be grafted, and not 

 the lateral branches 



2. The Omnitiges, every branch of which is equally a 

 stem, and therefore each is capable of being grafted. 



3. The Multitiges, plants in which some branches are 

 stems and susceptible of being grafted, and others are 

 not so. 



M. De Candolle once saw every branch of a large 

 pear-tree grafted : this was done in order to preserve a 

 great number of grafts, which had just been received from 

 a foreign country. The following year they were each 

 transferred to separate trees, and succeeded extremely 

 well. 



Emily. And how are grafts, when brought from dis- 

 tant countries, preserved alive ? 



Mrs. B. Frequently by dipping them into honey, 

 which, by preventing evaporation, preserves the internal 

 moisture. Another mode is to bury the cut end of the 

 graft in a moist root, such as a carrot or a turnip. 



It would be very difficult for me to explain all the va- 

 rious manners of grafting, there being above a hundred, 

 which may be divided into three classes. 



1. Grafting by approach. You bring together two 

 branches of two neighboring trees, and, cutting off the 

 extremities of each, you graft them together. If three 

 trees be united together in this manner, the stem of the 

 central one may be cut down, and the head will be kept 

 alive and nourished by its two neighbors. 



Caroline. This must be a safe mode of grafting rare 

 and delicate plants, as it is attended with no risk ; for sup- 



1110. Who has distinguished himself for experiments in this art 1 ? 



111. What are the three kinds of plants susceptible of this operation? 

 1112. What is stated of a pear tree by Candollel 1113. -How are 

 grafts preserved when brought from distant countries! 1114. How 

 many different modes of grafting are there? 1115. What is the first 

 and how is it described 1 ? 



