26 



injurious, from its causing the plant to grow luxu- 

 riantly, and thus to produce but few flowers ; while 

 in very dry seasons, it is equally beneficial. Much 

 more depends on a change of soil, than on its com- 

 position and quality. 



5. That water is a point which cannot be too much 

 attended to ; a great difference is caused in the same 

 flower by hard and soft water; but still more depends 

 on the manner in which it is applied, for one or two 

 good waterings are much better than a small quantity 

 given three or four times a week. 



6. That taking up the roots immediately after a 

 frost has destroyed the top, is the principal cause of 

 so many roots dying during the winter season. ( Gard. 

 Chron. 1841, 19.) 



The most just codes of excellence relative to the 

 dahlia have been promulgated by Mr. "Wildman and 

 Mr. Glenny, agreeing on the principal points, but 

 each so supplying deficiencies occurring in the other, 

 as to induce us to republish both. 



The first is the code of Mr. "Wildman, communi- 

 cated by him to the London Floricnltural Society, 

 and approved by that association. 



I. Form. — The outline, in profile, should be 

 that of about two-thirds of a globe or sphere, and as 

 shewn in this engraving, the rows of florets forming 



