ENEMIES, AND HOW TO FIGHT THEM 



98 



additional amount of carbon thus furnished to the tree takes 

 from the essential oil of the orange that quality which attracts 

 the rust mite to it, is not yet determined, but it suffices that the 

 effect is undoubted. It has been proven both in the West Indieg 

 and in Florida. 



LICHENS, SMUT, HONEY DEW. 



For ridding tree trunks of lichens and old half-loose bark, 

 for removing smut and that sticky substance, the excrement of 

 insects, called honey-dew, formula 'No. 1 is very effectual, used 

 with a scrubbing brush on the tree trunk, for lichens and old 

 bark, and with the hand-pump for smut and honey-dew. 



ORANGE PUPPY. 



As a rule, this worm, to which we have already alluded as 

 identical with the large butterfly, is not seriously aggressive, and 

 can be kept down by hand picking, because its numbers are not 

 great in any one grove, except in some few cases ; the mocking- 

 birds, woodpeckers, and butcher-birds proving excellent reme- 

 dies against its alarming increase, where, however, it becomes sq 

 troublesome as to really injure the trees by robbing them of their 

 foliage ; drenching the tree with lime-water will prevent the 

 mother butterfly from depositing her eggs among them, as n© 

 butterfly will light on a plant syringed Vvith lime-water. 



DIE-BACK 



Is, as we have noticed elsewhere, caused by the attack of ia- 

 sects that kill the terminal branches and young shoots as fast as 

 they appear. Kow, with every new shoot its corresponding rootg 

 die also; and so, er-e long, the whole tree feels the loss of its need- 

 ful nutrition, and twig after twig, branch after branch dies back, 

 often puzzling the owner to determine the trouble. 



Chief among the insects that have been proved at last to be 

 cause of the trouble, are the leaf-footed plant bug, and the 

 Euthodha galeator, which, not being stationary, are hard to rout, 

 but may be driveij away by several drenchings of No. 3 ; but the 

 tree must be carefully pruned of every dead or sickly limb, or 

 even, if necessary, its whole top cut away to give the few roots 

 left alive a chance to recover their vigor 



