The time fixed by the treaty of Nanking for the evacuation of the island of Chusan by the British troops was now approaching, and on May 10th the Chinese authorities resumed jurisdiction over the island. Until then Campbell's duties had not been purely military, the entire civil charge of Chusan having been vested in his hands. The most friendly relations existed between the British Brigadier and the Chinese Commissioners. Arrangements were made without a trace of friction for the preservation of the European burial-grounds and in regard to other matters. Campbell was the recipient of an interesting letter from the Commissioners, passages in which deserve to be quoted:--"While observing and maintaining the treaty, you have behaved with the utmost kindness and the greatest liberality towards our own people, and have restrained by strict regulations the military of your honourable country.... The very cottagers have enjoyed tranquillity and protection, and have not been exposed to the calamity of wandering about without a home. All this is owing to the excellent and vigorous administration of you, the Honourable Brigadier.... Now that you are about to return to your own country crowned with honour, we wish you every happiness."
Notwithstanding occasional attacks of ague which rendered him liable to depression and irritation, Campbell appears to have been fairly happy during his stay in Chusan. He writes on the eve of his departure of "'my last walk' in Chusan, where I have passed many days in quiet and peace, and where I have been enabled to save a little money, with which I hope to render my last days somewhat comfortable. My health upon the whole is pretty good; and altogether I have every reason to be thankful to God for sending me to a situation wherein I have been enabled to accomplish so much for my own benefit and the comfort of others, whilst my duty kept me absent from them." The latter allusion was to his father and sister, for both of whom he had been able to make provision in the event of his predeceasing them. Having left England heavily embarrassed, the increase of his emoluments during his stay in China had enabled him to relieve himself of liabilities, and this without being at all niggardly in the hospitalities which he dispensed.