Boos a German Reformed minister, arrived in America about 1771. He brought no testimonials with him, but the Congregation of Reading, Pa., concluded to take him. He conducted himself well during the year, and the Ccetus permitted him to continue another year. In a letter from the secretary of the Ccetus to the fathers, in May, 1777, the highest praise is bestowed upon Mr. Boos: that his Church in Reading is in a most flourishing condition through his industry and zeal; that he is beloved not only in Reading, but by all the members of the Coetus. In the minutes of 1782 we find that Mr. Boos was compelled to leave his Reading Church. He afterwards continued as an Independent minister. There are many traditions about him in Berks County, Pa. See Harbaugh, Fathers of the Germ. Ref. Church, 2, 392.