between January 1, 1824, and January 1, 1825. 89 



G, Iron tubes, resting on the beams, to carry the warm air 



from the chamber below into the upper part of the pit. 



H, Holes in the wall, four inches and a half apart, also for 



the conveyance of the heated air from the chamber into 

 the upper part of the pit. 



I, Iron pipe, an inch in diameter, for the conveyance of water 



into the hollow tiles at the top of the front flue. 

 K, A course of turf laid upon the wooden beams. 

 L, Back ventilators, covered by sliding shutters six inches 



high by eight inches long. 



Mr. William Buck sent, on the 7th of January, from 

 Elford, specimens of his Scarlet Rhubarb, which is also called 

 Buck's Rhubarb ; it had been forced in the following manner. 

 The roots taken up as perfect as possible, leaving the earth 

 which adheres to them still attached, are placed in a bed of 

 decayed tan, or in boxes or pots filled with the same, in the 

 Mushroom-house, which, by the aid of a flue, is kept at 

 a temperature of from 45° to 55°. Tan is preferred to 

 mould, because it receives water more freely when given to 

 the plants. After the forcing is finished, the roots are kept 

 under cover of long litter, or manure, till warm weather in 

 April, when they are divided by a sharp knife, and planted 

 in a north border, or in the open ground ; in the following 

 autumn the strongest are fit to be forced again in the ensuing 

 winter, and the weakest are replanted for another season. 

 It is found that peeling the stalks of this kind of Rhubarb, 

 before it is put into a tart, both destroys the colour and de- 

 teriorates the flavour. 



VOL. VII. N 



