422 INSECTS INJURIOUS TO THE ORANG^ 



pound of concentrated lye to each twenty-five gallons. These 

 insects are also frequently disseminated by the transportation 

 of nursery stock from one part of the country to another. 



Sickly trees are more predisposed to attack than healthy 

 ones; hence the use of fertih'zers to induce a vigorous growth 

 has been suggested as a remedial measure. In planting new 

 groves, avoid the vicinity of diseased trees if possible, as the 

 young lice are liable to be carried some distance by winds, or 

 on the feet of birds visiting the trees. 



