CHAPTER XI 



ROCK AND ALPINE PLANTS FOR THE 

 TOWN GARDEN 



SMOKE and dust are bad enough, but when 

 in addition, we have to contend with the 

 London fogs, it is then that Alpine and rock 

 plants fare worst. The chemical impurities 

 of a foggy town atmosphere, which often are 

 positively hurtful to the eyes, are deadly to 

 plant life generally, and, after a continuation 

 of two days, the leaves of many plants, not 

 only out of doors, but in our plant houses as 

 well, fall off prematurely as if seared by frost 

 or fire. So bad are these fogs, the dense 

 yellow in particular, that after a continuance 

 of two or three days the accumulation of 

 greasy, sooty deposit on the glass renders the 

 plant houses quite dark within and resort to 



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