CULTIVATION OF ROSES IN POTS. 167 



and the foliage will be of a richer and darker green; 

 the surface of the soil must have frequent stirrings. 

 The plants must be carefully examined, and when- 

 ever infested by the aphis, or green-fly, they should 

 be destroyed, if in the greenhouse, by tobacco 

 smoke. But, if in rooms, that method cannot be 

 well adopted, for the odour would penetrate into 

 every part of the dwelling. They should in that 

 case be brushed off into a pail of water; or the 

 safest plan will be to make a strong tea of tobacco, 

 fill a pail with it, and while in a tepid state invert 

 the plant therein, holding the hand or a cloth over 

 the surface of the pot to prevent the earth from 

 tumbling out. Roses in pots are wonderfully bene- 

 fited by a watering of manure water about once 

 in two weeks. This water is very easily prepared 

 either in town or country. The droppings from 

 the horse or cow , stable put into a large tub or 

 barrel, with water kept over it for a week or two, 

 occasionally stirred up ; the water then poured or 

 drawn off for use about the colour of good tea ; or 

 one quart of POUDRETTE, put into three gallons of 

 water stir it a few times, in two days it will be 

 fit for use. A new species of manure from the 

 Islands of the Pacific, called GUANO, the deposit of 

 sea-fowls that has accumulated for centuries, is very 

 valuable for making liquid manure. A quarter of a 

 pound, in three gallons of water, frequently stirred 



