140 ^ansactions of the Horticultural Society, 



numerous varieties of hardy trees and shrubs, of which thirteen 

 species, and ten varieties, are new. Several are highly inter- 

 esting to lovers of gardening. 



XXVIII. On the Culture of the Mango and Cherimoya. 

 By Thomas Andrew Knight, Esq., F.R.S. 



Upon a consideration of the failure which has generally 

 attended attempts at cultivating these plants, and the circum- 

 stances under which the mango has succeeded so well in the 

 garden of the Earl of Powis, Mr. Knight is led to the conclu- 

 sion, that being plunged in a bark bed, or in some similar 

 situation, where the roots can be kept in a constant state of 

 humidity, and not exposed to the action of the air, is the 

 secret which it was necessary to discover. This appears to 

 Mr. Knight to be accounted for upon the principles explained 

 by M. Dutrochet, in his work upon the influence of galvanism 

 upon the motions of the fluids of plants; and he does not 

 doubt that the ill success of his former experiments arose from 

 an excessive or injurious action of electric matter upon the 

 roots of his plants, owing to the exposure of the surfaces of 

 the pits to the air. 



XXIX. Some Account of the Mela- Carla^ Mai- Carle, or Charles Apple. 



By John Lindley, Esq., F.R.S. 



This is an account, illustrated by a superb engraving, of a 

 remarkable Italian apple, native of the territory of the Finale, 

 in Liguria. By Gallesio, an Italian pomologist, it is stated to 

 ripen in September, to keep well till the following spring, and 

 even to remain fresh till the succeeding antnmn. In October 

 it is a pale yellowish-green, covered with a bright red on one 

 side, and has a breaking, sweet, high-flavoured flesh ; in No- 

 vember it becomes more tender, and finally its red colour fades 

 a little, its green changes to a waxy yellow, its perfume dimi- 

 nishes, and its flesh becomes extremely delicate, without losing 

 any part of its flavour. In short, it has no equal in beauty, 

 tenderness of flesh, delicacy of flavour or fragrance. 



Whether in this country it will acquire all these good quali- 

 ties, remains to be proved. A south wall in a warm, dry soil is 

 recommended for it. 



XXX. A Review of Fifty Kinds of Grapes, described by Mr. Speechly 

 in his Treatise on the Vine. By Mr. Joseph Thompson. 



This is a capital review of the sorts of vines described by 

 Mr. Speechly in his valuable treatise. Mr. Thompson has 

 charge of the garden formerly under the direction of Mr. 

 Speechly, and his observations have all the weight of the be^t 

 authority. They do not bear curtailment. 



