NEUMANN'S STATEMENTS. 



279 



cluster of small btilblets which form on certain parts of the leaf, that 

 the shoot shows itself. Fig. XXXIX. a, indicates at what place we 

 may cut the leaf without hurting the plant ; the leaf being placed in 

 the earth forms a callus at its base, Fig. XXXIX. 6, whence the roots, 

 and consequently more shoots spring up. 



" Leaves intended for cuttings should be taken about the middle of a 

 branch ; the result is more certain than if we choose the lower leaves. 

 Gloxinia, BryophyUum, Lilies, &c., multiply well by such cuttings. 

 If we wish to get on very quickly, the midrib on the lower face of the 

 leaf may be broken in several places, without injuring the limb, and so 



Fig. XXXIX.— Cuttings ofleaves. 



lightly that the broken places can scarcely 1)6 distinguished ; the lower 

 face of the leaf is then placed on the earth of a pot. Soon at each 

 fracture a little callus developes itself, which gives rise to roots, as is 

 seen in Fig. XXXIX. c. Some leaves, when employed as cuttings, 

 send out roots and buds at each incision, as, for example, in Hemionitis 

 palmata, Bryophyllum, &e. Fig. XXXIX. d shows how this effect is 

 produced. 



" Cuttings of leaves are often a long time before they show any sign 

 of succeeding ; the care which they require is in consequence of their 

 delicate nature ; most especially must attention be paid to burying the 

 end of the petiole, or the base of the leaf. When their buds are strong 

 enough they may be accustomed, by degrees, to the free air of the 

 greenhouse, in which they are to remain, then treating them like 

 cuttings from branches. 



" Having succeeded with the leaves, of which I have just spoken, I 



