LUCT. IX..] HYBERNACULA GEMS. 467 



2. Flower-gems ( Gemmce ftoriferce vel fructi- 

 feros) are short, thick, swelling and rounded at 



the apex. Whenever the fruit ripens, all the parts 

 protruded from a flower-bud die, but those from 

 a leaf-bud give a permanent addition to the tree. 



3. Mixed gems (Gemmae mlxtcc vel foliif'ero- 

 florlf'erce) are intermediate in respect to form ; but 

 generally larger than either of the other kinds-^. 



The Peach tree, Arnygdalus Persica, the 

 Mezereon, Daphne Mezere- 

 um, and many other plants, 

 afford examples of distinct 

 leaf and flower gems ; the 

 Lilac and the Horse Chesnnt 

 of mixed gems; and Pear 

 and Apple trees of both leaf 

 and mixed gems. The mar- 

 ginal cut represents the twig 

 of a Pear tree, in which . is 



leaf is then to be cut off, leaving half an inch of the stalk ; 

 and any wood that may remain attached to the bark, must be 

 stripped off by pulling it downwards. The lower part of the 

 bark, attached to the bud, is now to be introduced into the cross 

 incision in the stock, and pushed downward*: and, the upper 

 part being cut across, the bark of the bud and that of the stock 

 are brought into close contact. A piece of bass tied round the 

 stock over the incision is the best mode of securing the bud 

 in its place; and on loosing it, about three weeks after the 

 operation, if the bud appear swelled and the footstalk of the 

 leaf drop off, the operation has succeeded. 



f Linnaeus enumerates seven species of gems: "Deciduae, in 

 H H2 



