3But if this cannot be procured, in order to prevent delay, the following expedient may be adopted. Pine branches or chips must be burnt, and, when thoroughly charred, pounded in a mortar with size. Thus the plasterer will procure an agreeable black colour.
3But if these facilities are not at hand, we must meet the exigency as follows, so that the work may not be hindered by tedious delay. Burn shavings and splinters of pitch pine, and when they turn to charcoal, put them out, and pound them in a mortar with size. This will make a pretty black for fresco painting.