Plarii Src.f of a small span-roofed Pit. 



247 



succession, for nobody knows how long ; till at last, after some 

 tremendous chaotic cause, Adam found " every fruit after its 

 kind " ready improved for his use. 



To starve a tree by ringing, transplanting, or any other 

 manipulation to the same effect, in order to obtain an improved 

 variety from its seed, might reasonably be called a novel and 

 unnatural method: yet you see, by the above, it is the most 

 ancient and natural after all ; and, to make a short story of a 

 long one, grafting pear trees on quince stocks, and training 

 down the boughs (a system so prevalent on the Continent), must 

 have powerfully assisted our neighbours in obtaining those de- 

 licious pears for which we are now so much indebted to them. 



Haffield, April 7. 1837. 



Art. III. Plan, Section, Sfc, of a small span-roofed Pit, for Green- 

 house Plants, recently erected at Stratford Green, Essex. By John 

 Bevis. 



Figs. 84<, 85, and 86. are a section, elevation, and plan, of a 

 small span-roofed pit, which Mr. AUcard has lately had erected. 



The letters refer to the same parts in the three figures ; a a are 

 air-flues covered with plain tiles ; 6, tiles covered with sand, to re- 



ceive the plants; c c, small gratings to admit air, and to exclude 

 vermin ; d d^ brick pillars to receive the tiles. 



This pit was erected for heaths, and for rearing and preserv- 



R 4 



