433 



PART IL 



REVIEWS. 



Art. I. Verhandlangen des Vereins zur Beforderung des Garten- 

 baues in den Koniglich Preussischen Staaten. Transactions of 

 the Society for the Advancement of Gardening in the Royal Prus- 

 sian States. Part. II. completing Vol. I. Berlin. 4to. 1824. 

 7 Plates. 



{Concluded from p. 518.) 



50. Ideas on Forcing-gardening, and particularly on the Forcing of 

 Cherries. By M. Schulze, Court Surveyor and Royal Garden 

 Director at Sans-Souci. 



Forcing-gardening includes all the means adopted by art 

 for accelerating vegetation. These means are derived from 

 the observation of nature, and from experiments founded on 

 these observations. 



Cherry-forcing is conducted in two modes : in a movable 

 structure placed over a tree, in the open garden or against a 

 wall ; and in a fixed structure, in which the trees are rendered 

 movable by being placed in pots or boxes. The latter mode 

 is the better. 



Whether the structure be movable or fixed, the sashes 

 should be placed nearly at right angles with the sun's rays 

 during January and February. Not only does such a position 

 better admit the sun's rays, but it allows the more rapid 

 descent of moisture from the glass, both internally and exter- 

 nally. 



Cherry trees, according to some, should not be planted in 

 tubs or pots till the season in which they are about to be 

 forced, because they will gain more strength if suffered to 

 grow in the open ground ; according to others, they should be 

 potted or planted in boxes a year before forcing. Success, in 

 both cases, depends chiefly on careful treatment. It is certain 

 that a tree or plant, in a pot or box, is more easily injured by 

 neglect of watering, or by overmuch water, than a tree or 

 plant in the open ground. 



Every tree destined for forcing must be prepared for that ex- 

 citement by a previous period of rest. " One must not force any 



Vol. III. — No. 12. ff 



