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 horixontal Rod 

 of the Sliding Ladder. ..^ ^ 



Inj%. 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 ^-v,^,^^ J 



J, h, which rods have ^^^ " 



turned up ends to support 

 the horizontal rod in the 

 manner shown in the sec- 

 tions, ^^5. 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. so. side new of the SUding Ladder. 



