46 



CUTTAGE. 



-a 



^ GLASS "^ 



SAND 



^7- Permanent propagating-frames m a greenhouse. 



covered box about two feet deep, with ;i tray of water be- 

 neath the soil, and which is heated by a lamp. A similar 

 but somewhat complicated apparatus is illustrated in Figs. 

 49. 5°. 51- This is an old form of oven, which has been 

 variously modified by different operators. Fig. 49 shows 



a sectional view 

 of the complete 

 apparatus. The 

 box, A A, is 

 made of wood, 

 and is usually 

 about three feet 

 square. L is a 

 removable glass 

 top. B repre- 

 sents a zinc or 

 galvanized iron 

 tray which is 

 filled with earth, 

 in which seeds 

 are sown or pots are plunged. C is a water tray, to 

 which the water is applied by means of a funnel extending 



ft^sWAtERV^ivJi;^ 



Simple propagating-ov en . 



