ON THE CULTURE OF THE CYCLAMEN PERSICUM. 151 



Inf. By taking care to supply them with water in very hot 

 weather ; if not so hot, every other day, and putting the shutters up 

 in a continuance of heavy rain, for they will not hear too much of 

 this at any season. In this month the plants are very liable to be 

 troubled with the aphides ; they must be brushed off and the plants 

 Avashed with tobacco water. 



L. How strong do you make it? 



Inf. The great desideratum seems to be the exact proportions ot 

 the tobacco and water ; this I have not yet discovered to my own 

 satisfaction. From a subscriber to the Cabinet, I learn, vol. viii., 

 page 183, that some which he purchased was so strong that it killed 

 his plants ; whereas others have used it so weak, that they have only 

 had their trouble for their pains. I think it may be easily dis- 

 covered : suppose a series of experiments were tried on a few plants 

 of trivial value, in pots, common border Auriculas, beginning with 

 three or four ounces of tobacco to a quart of water, and increase or 

 decrease till you find what the plants will bear to have the desired 

 effect without injury ; a rule can then be given by the proportions 

 being known, without which it is a folly to say tobacco water is a 

 cure for the aphides. To return to these green plagues of Auriculas, 

 it is necessary to keep them under ; I have known plants killed by 

 them, particularly Polyanthuses. The fly is easily destroyed, by placing 

 your pots in a frame rendered air-tight and fumigating them with 

 tobacco. I know not a better method than that described in the 

 Cabinet, vol. viii., page 264. Carefully watering and keeping off 

 the aphides is the chief business with Auriculas, in May, June, July, 

 and August ; remember they will not bear to be saturated day after 

 day at any season. 



(To be continued.) 



ARTICLE IV. 



ON THE CULTURE OF THE CYCLAMEN PERSICUM. 



BY G. E. GROVE, WITIIAM. 



Having observed in the last Number of the Floricultural 

 Caisinkt a rccmest of a constant reader on the Culture of the Cyclamen, 

 I have endeavoured to comply with his request by sending the fol- 

 lowing for inspection. 



