At a late meeting of the Horticultural Society, Mrs. Lawrence of Ealing Park produced a most beautiful bloom of the blue Water-Lily from one of her stoves. It was mentioned that it is possible to obtain a cross between this species and our hardy white Water-Lily. This being the case, the subject is well worth the attention of such of our readers as have the means of trying the experiment; for a cross of this kind would perhaps prove hardy, and a hardy blue Water-Lily would certainly be a great acquisition.