ON AN IMPROVED MODE OF HEATING GREENHOUSES. 29 



Camellia, with a single, straight stem, must supply the best bud ; for 

 not only will it be most vigorous and juicy, but, by being cut back to 

 a certain extent, will be made to send forth two or more lateral 

 shoots, low on the stem, which will become the first branches of a 

 well formed head. 



When the bud chosen has grown half an inch long, showing its 

 imbricated integuments, it is to be cut off with about an inch of the 

 ripened wood. The stock is then to be cut over to within two inches 

 of the soil, and both it and the wood of the scion are to be correctly 

 pared by a very sharp knife, till the two surfaces match perfectly to 

 the extent of an inch or more. Care must be taken not to intrude 

 upon the base of the growing bud. 



The adaptation being perfected, the parts are to be fitted to each 

 other, bound tightly, and secured with strong soft b^ss, made cpiite 

 pliable by soaking it in water. 



The surfaces are then to be entirely covered with good grafting 

 wax, worked up and rendered quite soft by the hand. 



Thus the operation will be finished, and so complete is the success 

 which attends it, that we were assured, by a very skilful operator, 

 that of fifty grafts rarely one failed to grow. 



But this success depends entirely vpon the total exclusion of air ; 

 and this must be effected by inverting a cylindrical glass vessel (a 

 glass tumbler will do extremely well) over the plant, pressing the 

 rim firmly into the earth, removing it as seldom as possible. No 

 bottom heat is admissible ; but a steady temperature of sixty degrees 

 will promote the junction of the 'scion with the stock. In the 

 excitable condition of a bold, swelling bud, growth will soon be 

 apparent, provided the stock be active. But if the inserted bud be 

 poor and weak, it is possible that it may not be able to receive the 

 rising sap, and thus both members will perish. 



ARTICLE IV. 



ON AN IMPROVED MODE OF HEATING GREENHOUSES. 



BY A FI.OUIST. 



I takic the liberty of sending the following novel mode of healing 

 greenhouses to you, hoping that it may prove useful to some of the 



