Remarks on Blight. 441 



To cultivate exotic plants well, every gardener should have 

 seven or eight different houses, each of which should be de- 

 voted to plants requiring a particular climate. This would 

 render collections of plants much more interesting than they 

 are at present ; since, from the power that all plants possess 

 of accommodating themselves to circumstances, those culti- 

 vated in stoves in Britain are in a decidedly artificial state, 

 and retain but few of their original habits. Many of the 

 peculiarities of the different climates which have been enu- 

 merated may be easily imitated : where excessive light is 

 required, the houses should have iron framework, and white 

 clear glass ; where less light is wanted, wood framework 

 might be employed ; and, for those plants which require 

 shade, to wooden frames might be added green glass, or netting, 

 or climbers, or even wooden shutters. It is not more difficult 

 to give proper proportions of air and moisture. Vapour is 

 easily produced for those plants which require a suffocating 

 moist heat, by throwing water on a heated floor. In this 

 manner, with such additions as will, of course, suggest them- 

 selves to an experienced gardener, the native climates of 

 almost all kinds of plants may be correctly imitated ; but it 

 can never be too often repeated, that all will be comparatively 

 useless unless the plants are allowed proper periodical rests. 

 The taking up of tulips and hyacinths, and of the roots of 

 georginas, &c., affords an illustration of the same principle. 

 Nearly all foreign bulbs die after the first season, if left to 

 winter in the ground. 



Such was the general purport of Dr. Lindley's lecture; 

 into which, however, a great deal more was introduced than 

 we were able to note down. As climate is a subject than 

 which nothing more interesting to gardeners can be named, 

 and on which scarcely any thing is known correctly, it is to 

 be hoped that Dr. Lindley may be induced, on some future 

 occasion, himself to lay the detailed result of his enquiries 

 before the public. J. W. L. 



Art. IX. On tohat is vulgarly called Blight on Plants. 

 By Mr. James Webb. 



Sir, 



Having been much gratified, as well as instructed, by the 



very excellent article in your last Number on mildew, I take 



the liberty of suggesting that you would render a very essential 



service to gardeners, by giving an article explaining what is 



