Bui. 334, U. S. Dept. of Ar;ricultur 



Plate VII. 



Fig. 1.— Blueberry Propagation Shelter at Whitesbog, N. J. 



The illustration shows the north and west sides of the shelter and the fence surrounding it. 

 The shelter covers four rows of frames, which face south. Each of the four sections is 9 feet 

 high and 10 feet 10 inches from front to back. 



Fig. 2.— Blueberry Propagation Frames at Whitesbog, N. J. 



Each sash is of the standard size, 3 feet wide and 6 feet long. The wooden sides of the cold- 

 frames rise 2 feet from the ground at the back and 1 foot at the front. The lowest part of the 

 roof joists is 6i feet above the ground. 



