-86 — 



ways as well as crossways ; I would also put a cer- 

 tain quantity of dung all around the frame so that 

 the sashes only could be seen ; the last operation 

 would be to cover the frame with ordinary win- 

 dows. * ' 



Q. Why should the layer of dung exceed by a 

 foot or a foot and a half the wooden frame laid 

 upon it ? 



A. To protect the seed bed which is inside the 

 frame against the cold. 



Q. In what position with regard to their exposure, 

 should these beds be built ? 



A. The beds should be built in such a manner as 

 to be exposed from north to south. In other words, 

 the beds should be laid lengthways eas»t and west and 

 north and south cross-ways, so that the plants may 

 be better exposed to the beneficial action of the sun, 

 and better protected from the north wind. 



Q. Ought the windows to be laid flat on the .fra- 

 mes, or ought they to be inclined or sloping ? 



A. The windows should be inclined and the slop- 

 ing from north to south. This sloping or inclined 

 plane is obtained by making the frame one third 

 higher on its north side than on its south side. 



Q. What is the object of this slope from north to 

 south ? 



A. It has two different objects in view ; !<> to faci- 



