354 THE CHERRY. 



binds the trunk, until suddenly ruptured by the increasing 

 pressure. It usually bursts and cracks open on the south- 

 west side, where the new growth swells out, and repeatedly 

 bursting, the tree finally perishes. Slitting open the bark 

 with a knife was found to produce this sudden swelling and 

 increased growth at the precise lines where the slits were 

 made, but afforded no relief at other places. It was only 

 by shaving off evenly the whole surface of the hardened 

 bark, that the unnatural cracking and swelling out was pre- 

 vented.* Further experiments are needed in relation to 

 this subject ; possibly a softening application to the hard 

 bark may be discovered ; and it may also be very necessary 

 where the outer portion is peeled or shaved off, to protect 

 by a coaling of straw, the denuded surface. 



* J. B. Turner, in Horticulturist. A similar result, but evenly distributed over 

 the surface, and accompanying healthy growth, occurs with all old and rough-barked 

 forest trees, the exterior coaling becoming gradually and evenly furrowed 



VARIETIES. 



SYNOPSIS OF ARRANGEMENT. 



DIVISION I. FRUIT HEART-SHAPED. 



(Fruit inclining to sweet, tree vigorous and regular in growth.) 



Class I. Heart Cherries. 



(Flesh tender or half-tender.) 



Sub-Class I. Fruit Black, dark red, or crimson, 



Section I. Fruit large. 

 Section II. Fruit medium. 

 Section III. Fruit small. 



Sub- Class II. Fruit bright red, or lighter. 



Section I. Fruit large. 

 Section II. Fruit medium. 

 Section III. Fruit smalL 



