FOESYTH ON FRUIT AND FOREST TREES. 193 



Dryades acquire lasting attachment to particular ob- 

 jects, the science is invaluable, as the object of their 

 love may be thus continued flourishing to the end of 

 time, or as long as the inamorata chooses to pay the 

 surgeon. 



Mr Forsyth presents us with numerous models of 

 knives, irons, and gouges, suited to the operation of 

 removing the dead parts of his patients. Where 

 the gangrene occurs in the outside, he hews and 

 scrapes away with these till every portion in which 

 the vital principle is extinct be detached, and the 

 surface all regular and smooth, so scooped out as to 

 afford no hollow where water may rest. He then 

 gives a coating of his composition salve to all the 

 space operated on, wherever the cuticle of the bark 

 has been broken, which prevents the drought, rain 

 or air, from injuring the bared parts till the bark 

 spread over it. In cases where the removal of all 

 the dead part at once would endanger the stability 

 of the tree, he first removes it along the borders of 

 the decayed part all round, close to the sound bark, 

 of such a breadth as to give full room for the bark to 

 spread over in one season, and covers this with his 

 pigment, annually repeating the cutting out, and 

 painting around the rim or edge of the new-formed 

 bark, till the whole of the dead part be cleared away, 



N 



