THE CULTURE OF THE GRAPE. 27 



an inch in length, at proper distances from the ends, where 

 the thickness is three fourths of an inch, the ends, also, being 

 of this size. The sides of the fireplace must be built of fire 

 brick ; the top must be covered, also, with tile, or brick of 

 this material, if coal is to be used. The tile on the top should 

 be covered with one or more courses of brick. My furnaces 

 have five or six, to retain and prevent too great escape of the 

 heat. In the cut, the top of the furnace is represented as 

 arched ; this is not necessary, but it may slope from the front 

 to the back, where it enters the flue, three or four inches, 

 with benefit to the draft. At the further end of the furnace, 

 the flue should commence, and should have a rising of cer- 

 tainly two to three feet from the grate, to insure a good draft ; 

 the flue should run to the front of the house, and thence along 

 this, at the distance of twelve inches from the wall. This 

 flue should be of brick, carefully made, to prevent the escape 

 of smoke or gas ; it may be eight to ten inches square on the 

 outside, or it may be fourteen inches wide, and eight inches 

 deep, and covered with tiles ; either answers perfectly well. 

 If the house is a very small one, — less than twenty feet, — the 

 flue may return on the back of the house, and the smoke be 

 carried ofi" by the chimney near the furnace. If the house is 

 over twenty feet in length, the better way will be to continue 

 it around the end to the back Avail, and up by a chimney out 

 of the roof, as represented in the cut of the lean-to house. 

 The flue, for the first twelve feet after leaving the furnace, 

 should be built on two or three courses of brick, (or a stone 

 foundation may be substituted,) from thence to the chinmey 

 either on plank, (which is preferable on account of dryness,) 

 or on bricks laid one to two inches apart ; one course of brick 

 is suSicient for the floor of the flue. I usually have the first 

 few feet of the sides of the flue built with the bricks laid flat, 

 and, after this, on their sides, as represented in the lean-to 

 house. 



