ON COMMON DUNO BEDS. 27 



The next consideration is a temporary lining 

 of some prepared material, as directed for the 

 seed-bed ; for the purpose of carrying off the 

 excess of moisture, and keeping up the necessary 

 heat within the frame : procure some stakes, 

 and let one end be thrust into the bed horizon- 

 tally, on a level with the wall or ground- 

 level, while the other end rests on the wall 

 surrounding the cavity ; then let a quantity of 

 long litter be laid on the stakes to prevent the 

 manure falling through them, and upon this 

 build a lining till it reaches three or four inches 

 above the surface of the bed, inside the frame, 

 which will give sufficient heat for a time. The 

 object of allowing two or three feet under the 

 lining is to prevent a burning heat rising in the 

 bed. A little air must be given during twenty 

 hours out of the twenty-four, regulated as 

 follows : When you uncover the bed in the 

 morning, the night air must be taken away ; as 

 the external air coming in contact with the 

 glass, will cause a depression of the internal 



