112 



pound; tobacco, half a pound; nux vomica, an ounce; 

 which boil all together in four English gallons of soft 

 water to three, and set it aside to cool. In this hquor 

 immerse the whole plant. Plants in any other state, 

 and which are placed in the bark bed, may safely be 

 watered over head with this liquor ; and as the scale 

 harbours most in the angles of the leaves, it stands 

 the better chance of being effectual, on account that 

 it will also there remain longest, and there its sediment 

 mil settle. In using it in this latter way, however, if 

 repeated waterings be necessary, the hquor should be 

 reduced in strength by the addition of a third or a 

 fourth part water. (Xicol.) 



Various species of scale, of which that noticed by 

 Mr. Xicol is one, are the only insects that materially 

 injure the pine apple, and of these we will now pro- 

 ceed to take more particular notice. 



Coccus hesjjerichrm, the Orange Scale Insect, is the 



