American Philosophical Society, the Geological Society of Pennsylvania, the Geological Society of France, and of other scientific bodies in America and Europe.
A minute adopted by the Board of Trustees of the University of Nashville, on the occasion of the death of Prof. Troost, relates that, "born and liberally educated in Holland, he early manifested a zealous devotion to natural history and chemistry, more especially to the then infant sciences of geology and mineralogy. With a view to the more successful pursuit of his favorite studies he visited Paris, and was for several years the pupil of the celebrated Haüy. He removed to the United States about forty years ago, and in due time became an American citizen. His entire life was consecrated to geology and the kindred sciences, with what ability and success his published writings and his well earned reputation at home and abroad may eloquently testify. As a professor in this university during the last twenty-two years and a State geologist of Tennessee for the most part of that period, he won the confidence and respect of the community by invaluable service in both capacities, as well as by the unaffected modesty, kindness, and uniform courtesy of his deportment toward all men. In the various relations and stations of life, public and private, he was without reproach and above suspicion. Beloved, trusted, honored, venerated by all those most intimately connected or associated with him, he could not make an enemy—he had none."