THE GRAPE VINE. 53 



injurious by their shade. When vine -borders have 

 from necessity to be made near large growing trees, 

 an effectual barrier — such as a brick and cement wall 

 — should be provided against the inroads of the tree- 

 roots. 



VINERY FOE EAKLY FOECING. 



What I intend to be understood by the term " early 

 forcing," is that which produces ripe grapes in April 

 and May, and which necessitates the commencement 

 of forcing in November and December respectively. 

 The forcing thus extends over a period during which 

 the days are short, sunless, and cold — conditions 

 which, it need scarcely be said, are adverse to vege- 

 tation of every kind. Even the most ignorant of the 

 art of forcing through such a season will at once 

 conclude that the production of good grapes in early 

 spring, in this ever-changing climate, must be one of 

 the most difficult tasks of the horticulturist. What- 

 ever structure it is that insures the greatest possible 

 amount of light, and is at the same time the most 

 easily heated to and maintained at the necessary 

 temperature, must of necessity be the best for early 

 forcing. Very little consideration will serve to con- 

 vince any one that the form of vinery which presents 

 almost its entire surface of glass to the south, so as 

 to catch every gleam of sunshine, must be the best. 



The " lean-to " as represented by fig. 6 is beyond 

 all doubt the best for early forcing. Indeed it is a 

 good form for producing grapes at any season of the 

 year, but especially at the time now under considera- 

 tion. The wood-work should not be any heavier than 

 gives sufficient strength, and it should be glazed in 

 large panes with 2 2 -ounce British sheet-glass. The 



