MONTHLY CALENDAR. 159 



Green-liouse plants will need constant care and attention. 

 When water is necessary, let it be given in mild weather, 99. 

 In case of accidents happening from frost, I would remark, 

 that the sudden transition from cold to heat is often more de- 

 structive to plants than frost itself. If plants get frozen, and 

 cannot be screened from the rays of the sun, they should be 

 watered as the air gets warm, and before they begin to thaw. 

 If sufficient attention be paid, so as to have the temperature 

 of the house rise gradually as the water is sprinkled over 

 the leaves, it may be a means of preserving plants that would 

 otherwise be destroyed. 



See that the green-house, or room, in which plants are 

 kept, is so secure as to prevent the intrusion of cold air, or 

 the departure of warm air in tlie night season. 



Collect from heaths and rocks such kinds of earth as are 

 suited to the different species of exotic plants, and gather 

 up leaves of trees. If you intend to make hot-beds of them, 

 they should be put together dry ; but if you intend them for 

 compost, they may be laid together as wet as possible, in 

 order that they may rot, for use in succeeding years. 



