After this Dr. Cornelius took refuge in the house of one of his friends, where he met two other men who had been his fellow prisoners in the Provost Jail. As all three men were desirous of leaving Long Island, in a few days, with the aid of friends, a boat was secured in which Cornelius and his two companions rowed across the sound to Norwalk, Conn., where they found shelter in the house of Capt. Rogers, one of the party. Dr. Cornelius remained at Captain Rogers's residence only long enough to take needed rest and refreshment, then proceeded on his way, and after a journey of seven days, rejoined the American Army which was then in those memorable headquarters at Valley Forge, Pennsylvania. He continued in the service until Jan. 1, 1781, and received an honorable discharge. On retiring from the service in 1781, Dr. Cornelius settled at Yorktown, Westchester County, and entered on the practice of his profession. Amid the hardships and dangers of his life in the army he received vivid religious impressions and came to be known as the "beloved physcian," which led him after settling there to unite with the Congregational Church, and in 1787 he was honored with the office of deacon. Some years later he removed from Yorktown to the northwest part of the town of Somers, which is now known as Baldwin Place, and located on the farm at present owned by Samuel M. Lounsbury, where he resided to the time of his death. Here he devoted himself with renewed energy to his profession and acquired a large practice extending over the towns of Carmel, Somers, Yorktown, Philipstown, and Fredericksburg. He was a close student, and by patient study and industry accumulated a large fund of general and professional information. Many young men studied medicine under his superintendence and became able and successful practitioners. Though Dr. Cornelius was an energetic man and possessed great firmness of character, he was also very kind hearted and generous--the poor received gratuitous medical attendance from him to a great extent, and while he ministered to the physical ailments of his patients, like his Master, the "Great Physician," he was ever ready to offer spiritual comfort to those who stood in need, and kind words and advice were freely bestowed on rich and poor alike, in such measure as the case required.