358 Forcing Sca-Jcale m the open Groufid. 



from this mode of watering. There need be no dread of a 

 burning heat ; the space, where burning begins, may be always 

 temperately cool, and constantly throwing up a fine moist, 

 instead of a parching dry, heat : there is never occasion for im- 

 moderate watering above, in order to reach the bottom of the 

 hills : and, in short, the water is so equally diffused throughout 

 the subsoil, that the plants on the surface thrive astonishingly. 

 The cost of such a machine for two lights, is about 3s. 



J. Stephens. 

 Carr House, March 28. 1828. 



We are perfectly aware of the absolute necessity there is, in 

 forcing cucumbers and melons, that no part of the bed of 

 earth should become parched by an excess of heat from the 

 dung, and especially where parching most frequently takes 

 place, immediately under the hills of earth ; we are also aware 

 that the plants and surface may receive too much water, 

 before the bases of the hills receive enough : but we regret the 

 unnecessary complication of the instrument employed by Mr. 

 Stephens, as we think a more simple contrivance would answer 

 the purpose quite as well, viz. a metal tube ( Jig. 1 00. a), having 



a movable pointed nozzle (b), loosely attached by two wires run- 

 ning on two staples (c), which, thrust into the mould in any 

 direction, and to any depth, would, when drawn back a little to 

 dislodge the nozzle, convey water to" any part, and in any 

 quantity required; care being taken to close the holes after 

 the tube is withdrawn. But this we would recommend to our 

 correspondent's consideration : he has experience, and, we 

 doubt not, he can suggest something which might be of more 

 simple construction, and more general usefulness. — Co7id. 



Art. XX. Description of an easy and convenient Method of 

 forcing Sea-hale in the open Ground, as practised in the 

 Garden of Pendry Williams, Esq., Pen-pont, near Brecon. 

 By Mr. W. Vaughan. 



Sir, 

 A BORDER [fg. 101. a), at the back of the hot-house {b), is 

 heated by a double flue, which, first proceeding from a fire- 



