210 



Hothouse Ladder for thinning Grapes. 



Upon the whole, the endeavour to procure a constant current 

 of air through hothouses is highly commendable ; and, as Mr. 

 Penn has succeeded admirably, it is to be hoped that, as he has 

 had the honour of having made a great improvement in garden 

 architecture, his discovery will not to himself be a barren one. 



London, Feb. 18. 1841. 



Art. IV. Notice of a Ladder for thinning Grapes in Hothouses. 

 By James Eaton, Gardener, Melbury Park. 



Fig. 28. 



Ladder for thinning Grapes. 



Fig. 29. Section of the horizontal Rod 

 of the Sliding Ladder. 



Infg. 28., a a represents a f-inch iron rod, which reaches from 

 one end of the vinery to the other, suspended about 2 ft. from 

 the rafters by iron rods 

 i, i, which rods have 

 turned up ends to support 



the 



the 



horizontal rod in 

 manner shown in the sec- 

 tions, fgs. 29. and 30. ; c, 

 irons to hang on the rod to 

 support the ladder, also 

 shown in the section at c ; 

 d, the ladder ; e, the rafter ; 

 f part of the sill of the 

 front wall, on which the 

 lower end of the ladder is 

 supported ; g^ upper part 

 of the crooked irons c, 

 showing a small wheel to 

 facilitate the moving of the 

 ladder along the horizontal 



Fig. 30. Side View cifthe Sliding Ladder. 



