editor's table. 



regulated, and can be opened in any weather, from the inside. Being in the highest point 

 of tlie house, and continuous from end to end, it affords a greater escape of foul or heated 

 air, and operates equally on all parts of the house at once ; the caps, when open, being 

 directly over the opening, protect the plants under it from excess of moisture during pro- 

 tracted rains. You will perceive that the sash bars are raised, by the stretchers, clear of 



t-^ 



the rafters, thus increasing the opening at the ridge, and affording a free circulation of 

 lengthwise, immediately under the glass, which, if not of any material benefit to the 



