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XXXIII. On the Treatment of the Nymphcea Rubra. In a 

 Letter to the Secretary By Mr, Christie Duff, 

 Corresponding Member of the Horticultural Society of 

 London, and Gardener to the Earl Grosvenor, at Eaton 

 Hall, in Cheshire. 



Read December 18, 1827. 



Sir, 



Th e Nymphaea Rubra had been grown in the Pine stove 

 here for many years, but never produced blossoms, owing, as 

 I considered, to its being too far from the glass, and the tem- 

 perature of the Pine-stove being generally too low for the 

 developement of its flowers. With this impression on my 

 mind, in December 1826, when its leaves, were decayed, I 

 took up the bulbs, or tubers, out of the stone cisterns, in 

 which they had grown for years, and put them into pots ac- 

 cording to the size of the tubers, and plunged the pots in^ 

 water to within an inch of their rims. They remained in this 

 situation in the Pine-stove, till the plants began to show leaves 

 in the April and May following. They were then planted in 

 cisterns, and in glazed earthen-ware pots, in which was the 

 following soils ; — in the bottom, four inches of strong clay, 

 made solid, above which was six inches of light mellow loam, 

 and, at the top, an inch or two of sand, to keep the water 

 clear. The cisterns, which are made of Yorkshire flags, and 

 of the following dimensions, — three feet long, one foot eight 

 inches broad, and one foot four inches deep, were placed 



