INTRODUCTION. I 



equal spaces of his' neighbours' soil. Mr. Knight has 

 scai'cely left a department of our horticulture unim- 

 proved, by that combination of scientific ^vith prac- 

 tical knowledge which he, perhaps more than anv 

 other man, had united in his own mind. 



It behoves every gardener to follow in theu" steps, 

 for though the great men who have gone before 

 have done much for gardening, yet still more remains 

 to be accomplished. We still, on most points, do 

 and must ever see through a glass dai'kly ; but that 

 is no reason why any one should refrain from the 

 efifort to elicit a ray towards diminishing the obscu- 

 rity — and we may all, without fear of misspending our 

 laboui', continue to act as if botany could still fur- 

 nish something new, and as if chemistry and phy- 

 siology had still some secret to reveal to the en- 

 quirer. 



