i. IN Till. OPEN AIR. 83 



Of course this kind of cultivation is perfectly practi- 

 cable in private gardens where, however, I have not yet 

 seen it carried out. Where there is a mushroom-house 

 or empty shed in which mushrooms may be grown, there 

 would be less occasion to pursue it, but there are many 

 places in which no such conveniences exist. In any case 

 it is desirable that gardeners generally should know to 

 what a large extent this phase of the culture is pursued 

 round London and Paris, and how simply it is done. 

 Instead of mats, it would be an improvement to cover 

 the beds with tarpaulin or some other ctteap material 

 that would keep out the wet. 



