PROPAGATING-FRAMES. 



47 



through the box. A lamp, D, supplies the heat. 



funnel of tin, e e, distrib- 

 utes the heat evenly. 



Holes should be provided 



about the bottom of the 



box to admit air to the 



flame. A modified form 



of this device is shown in 



Figs. 50 and 51. The 



water tray, G, slides in 



upon ledges, so that it 



can be removed, and the 



heat funnel, L D L, slides 



in similarly and is made 



to surround the flame like a chimney. The front side of 



the apparatus is remova- 

 ble, and the top of the 

 frame, 



49. Propagaling-oven. 



metal. 



K, is 

 The 



made 

 cover 



of 

 for 



this apparatus is shown in 



L Fig. 51. The ends, a a, 



are made of wood, with 



openings, indicated by 



the arrows, to allow of 



50. Modified form of Fig. 49- ventilation. The front 



and top, ^^, are made of glass. The frame-work, i: c c, 



is made of metal. The cover is hinged on, or held with 



pegs, 1 1, Fig. 50. 

 Chauvifere' s 

 propagating- 

 oven, a French 

 apparatus, is 

 shown in Fig. 

 52. It is essen- 

 tially a minia- 

 ture greenhouse. The sashes are seen at c c, and over 

 them is a cloth or matting screen (shown at the right). 



SI. Cover for Fig, so. 



