As well might it be urged that the wild & uncultivated tree, hitherto yielding sour & bitter fruit only, can never be made to yield better: yet we know that the grafting art implants a new tree on the savage stock, producing what is most estimable both in kind & degree.
Although this document is riddled with racist and outdated ideals, it's clear the writing is well thought out and detailed. The metaphor of the tree and the fruit it produces works on so many level. The use of the word uncultivated allows us to see a tree without cultivation, but also a man without an education. The stock the tree produces probably means the words the person produces. The words and knowledge are either native or savage. But white people aren't native to this land?