[12] As a token of his sense of obligation to the instruction derived by him in his boyhood from a free Boston grammar school, Franklin bequeathed the sum of one hundred pounds sterling to the free schools of that city, subject to the condition that it was to be invested, and that the interest produced by it was to be annually laid out in silver medals, to be awarded as prizes. [13] In an earlier letter to James Parker, Franklin commented on the "Dutch" immigration into Pennsylvania very much as a Californian was afterwards in the habit of doing on the Chinese immigration to our Pacific coast. The "Dutch" under-lived, and were thereby enabled, he said, "to under-work and under-sell the English." In his essay on _The Increase of Mankind_, he asked: "Why should the _Palatine Boors_ be suffered to swarm into our Settlements, and, by herding together, establish their Language and Manners, to the Exclusion of ours?" Expressions in his letter to Jackson, which we do not mention in our text, make it manifest enough that he gravely doubted whether the German population of Pennsylvania could be relied upon to assist actively in the defence of the Province in the event of its being invaded by the French. However, after suggesting some means of improving the situation, he is compelled to conclude with these words: "I say, I am not against the Admission of Germans in general, for they have their Virtues. Their Industry and Frugality are exemplary. They are excellent Husbandmen; and contribute greatly to the Improvement of a Country." [14] Another sidelight upon the character of Franklin in his boyhood is found in connection with the caution in regard to England that he gave to Robert Morris in 1782, when the Revolutionary War was coming to an end. "That nation," he said, "is changeable. And though somewhat humbled at present, a little success may make them as insolent as ever. I remember that, when I was a boxing boy, it was allowed, even after an adversary said he had enough, to give him a rising blow. Let ours be a douser."