themselves overtopped by their more thriving and vigorous neighbours. It is perfectly obvious too, that the injury arising to the Plantation would not stop here. So long as under-strappers were allowed to remain, they would, to a certain extent, have the effect of preventing the admission of light and air into the Plantation, which would materially affect the health and the progress of the standard trees. The errors of _omission_ are both serious and numerous: those of _commission_, great though they be, are not equally so. The former are generally first in the order of time, for where one Plantation is injured from _too early thinning_, there are ten that suffer for the want of it; and this early neglect affects the vitality and prosperity of a Plantation much more than might be supposed. Omitting to do what ought to be done will, however, be very prejudicial to the health of Plantations at any stage of their existence, and it is quite well known to the experienced Forester, that they ought ever to be watched with most tender care, until the planter is fully satisfied that he has completed the nursing and training of a sufficient number of standard trees, to furnish the ultimate crop. But errors of omission sometimes admit of remedy; whereas, if injury is committed by excessive thinning, or by cutting down trees which ought to have remained, it is often difficult, and sometimes impossible, to repair the mischief that is done. Both the errors to which I have alluded, must be avoided by the planter who would desire to have a healthy and _continuously thriving_ Plantation.