their producing the same sort of _Tendrils_ as are observ'd about the
roots of the _Arbor_ itself. Some cautions however are very necessary,
especially to young _Botanists_; and first, to be very diligent in
keeping their trees clean and neat; a pernicious sort of insect, not,
unlike a _Morpione_ or _Cimex_, being very subject to breed amongst the
_Fibrillae_, which, if not taken heed of, and timely destroy'd, proves
often of very dangerous consequence.

Another caution, no less useful, we have from that excellent and
judicious Botanist Mr. _Humphrey Bowen_, to beware of a poisonous
species of _Vulvaria_, too often mistaken for the wholesome one, and
which, if suffer'd too near our trees, will very greatly endanger their
well-being. He tells us, in the 12th volume of his large abridgment of
_la Quintinye_, that before he had acquir'd his judgment and experience,
some of his plants have often been sufferers through this mistake; and
he has seen a tall thriving tree, by the contact: only of this venomous
shrub, become _porrose, scabiose_, and cover'd with _fungous
Excrescences_ not unlike the fruits of the _Ficus sylvestris_ in which
case the _succus_ also has lost both its colour and vertue; and the tree
itself has so much partaken of the nature of the venomous shrub that had
hurt it, that itself has become venomous, and spread the poison through
a whole Plantation.

These distempers of a tree of the greatest use and value, have employ'd
the labours of the most eminent Botanists and Gardeners, to seek out
remedies for them: In which, however, none have succeeded like the
celebrated _Dr. Misaubin_ who from his profound knowledge in Botany has
composed a most elaborate work upon _all the things that can happen_,
both to the _Arbor Vitae_ and _Vulvaria also_: There he has taught a
certain cure for all these evils; and, what is most wonderful, has even