In 1860 he sent out the syllabus of his Synthetic Philosophy in ten volumes, and in spite of frequent ill health had the satisfaction of completing it in 1896 with the third volume of the Principles of Sociology.
Jevons suffered a good deal from ill health and sleeplessness, and found the delivery of lectures covering so wide a range of subjects very burdensome.
Borden was a member of the Imperial War Cabinet and Imperial War Conference 1917-8 held in London, England, but owing to ill health resigned the premiership in 1919.
In the early part of the Revolutionary war, ill health kept him at home, and it was not until 1797 that he went afloat again.
In 1792, having for some time devoted himself to the study of Persian, he was appointed to the staff of Lord Cornwallis as Persian interpreter, but two years afterwards was compelled by ill health to leave for England.
He was adjutant-general of New York state in 1839-1843, and became a brigadier-general of volunteers in the Union army in 1861, commanded a division in Virginia in 1862-1863, and, being compelled by ill health to resign from the army, was U.S. minister to the Papal States in 1863-1867.
When his father was sent as minister to Great Britain in 1825 he accompanied him as secretary of the American legation, and when his father returned home on account of ill health he remained as charge d'affaires until August 1826.
He was raised a second time to the consulship by Alexander Severus, in 229; but on the plea of ill health soon afterwards retired to Nicaea, where he died.