GLASS STRUCTURES 93 



suggest. The sashes for covering them are generally 

 feet or 3x6 in size. The location should be near to water 

 and to the house, preferably sloping to the south, and well 

 protected on the north and west by buildings, trees, etc. 

 If there is no protection on the north and west, a tight 

 board fence six feet high will answer the purpose. 



In making the bed the following are requisites : Enough 

 2x12 in. plank to go the length of the north side and the 

 same length of 2x6 

 in. plank for the south 

 side of the bed, and 

 2x4 in. stakes, two or 

 more feet long, for 

 each corner and to 

 support the sides firm- 

 ly in place, and sash 



and shutters tO COVer. Fig. 33. A movable cold frame, which may be 



stored out of the way in summer. It is generally 



Boards may be Used made of 1-inch boards, and is very convenient 

 for those using only a few sashes. 



if planks are not 



available. The planks should be made into a box with 

 its width equal to the length of the sash and extending 

 east and west. See Fig. 33. The depth of the frame will 

 vary with the use that is to be made of it. If low-growing 

 plants, such as celery, are to be grown, the north side 

 should be twelve inches high and the south side six. If 

 tomatoes are to be started, the north side should be about 

 sixteen inches and the south side ten inches, so as to give 

 head room to the plants. The slope of five or six inches 

 thus obtained permits of quick drainage during a rain and 

 also gives plenty of sunlight. The planks or boards should 

 be nailed to the stakes, and end pieces put in. The outside 

 of the frame should be banked with dirt or strawy manuEB 

 to keep the interior warmer. 



