128 



In conclusion, let every possible regard be paid to 

 the permanency of the roots of the pine. It is not 

 their excessive luxuriance at any given period, so 

 much as their uniform and steady action : this last is 

 the grand desideratum. In addition to this, secure 

 a genial atmosphere, generally loaded with moisture, 

 and accompanied by an almost constant circulation or 

 motion. ^• 



Acarus (ErythrcBus) tellarius. — The Red Spider. 

 — This pest of the gardener is very rarely found on 

 the pine apple, and never will occur if the air of the 

 pit is kept duly impregnated with watery vapour. 

 Sulphur fumigations and a more free supply of at- 

 mospheric moisture will speedily remove and continue 

 to exclude this insect. 



The Red Spider cannot thrive — scarcely exist — 

 where a sufficiency of water is regularly applied. As, 

 however, syringing cannot be persisted in at all tim.es, 

 something else is requisite at those periods, when the 

 syringe is laid by. Sulphur, then, is the best thing 

 at present known for this purpose ; but as many 

 persons are deterred from the use of it, through a fear 

 of its pernicious effects, we will here detail our mode 

 of using it, by which we have been kept (we might 

 almost say entirely) free of this pest for the last twelve 

 years. We apply it about three or four times in the 

 course of the year, to each house ; the houses are on 

 the average about 30 feet long, by some 1 6 feet wide. 



