A French gunboat a few years before had ascended it for one hundred and thirty miles to Lembarene, the head of the Ogowe Delta, and had attached it to France. Two English traders and one German had built trading-houses at that one-hundred-and-thirty-mile limit, and traversed the river with small steam launches in their rubber trade. Besides these three, I was the only other white resident. They were living in the Galwa tribe, cognate in language with the Mpongwe. I settled at a one-hundred-and-fifty-mile limit, in the Akele tribe (cognate with the Benga), building my house at a place called Belambila. Two years later I abandoned that spot, came down to Lembarene, and built on Kângwe Hill. There I learned the Mpongwe dialect. I remained there until 1880, successful with school and church, and travelling by boat and canoe thousands of miles in the many branches of the Ogowe, through its Delta, and in the lake country of Lakes Onange and Azyingo. In 1880 I took a second furlough to the United States, remaining eighteen months, and returning at the close of 1881. My prosperous and comfortable station at Kângwe was occupied by a new man, and I resumed my old _rôle_ of pioneer. I travelled up the Ogowe, one hundred and fifty miles beyond Lembarene, ascending and descending the wild waters of its cataracts, and settled at Talaguga, a noted rock near which was subsequently established the French military post, Njoli, at the two-hundred-mile limit of the course of the river. There I was alone with Mrs. Nassau, my nearest white neighbors the two French officers five miles up river at the post, and my successors at Kângwe, seventy miles down river. The inhabitants were wild cannibal Fang, just recently emerged from the interior forest. It was a splendid field for original investigation, and I applied myself to the Fang dialect. I remained at Talaguga until 1891, when I took a third furlough to the United States, and stayed through 1892, during which time the Mission Board transferred my entire Ogowe work, with its two stations and four churches and successful schools, to the French Paris Evangelical Society. In March, 1893, at the request of the Rev. Frank F. Ellinwood, D.D., LL.D., I wrote and read, before the American Society of Comparative Religions, a forty-minute essay on Bantu Theology.