put a coat of lime-mortar^ about half an inch 

 thick round the body, then drew the earth up to 

 it. These trees are now perfectly healthy, and 

 there has not been the sign of a worm about 

 them since, although it was five years past, that 

 the experiment was made. I have since tried 

 the same on a great number of trees with equal 



success." 



In the same work (vol. vi. p. 37.) are some 

 interesting observations on the preservation of 

 peach-trees, by Mr. Evan Thomas, jr. from which 

 we gather the following information. On re- 

 moving the earth from about the roots of some 

 trees of a sickly appearance, he observed a con- 

 siderable quantity of gum that had exuded from 

 several minute apertures of the trunk ; on opening 

 these carefully with a knife, the larvae were dis- 

 covered. They were about one inch long, of a 

 cream colour, the head somewhat depressed, 

 chestnut-brown. "They had perforated the bark 

 about one inch below the surface of the earth, 

 and were devouring voraciously, both the albur- 

 num and liber, leaving the cortex and epidermis 

 as a covering and defence." Having destroyed 

 these depredators, Mr. Thomas applied Forsythe's 

 healing composition to the wounds, with the 

 expectation that it would not only exhibit its 



PLATE XIX. C 



