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| | Page D |
 | | His work on the spectra of incandescent substances foreshadowed the development of spectrum analysis, in which his son Henry Draper became a pioneer.Most of his papers on radiant energy were republished in his Scientific Memoirs (1878). |
| | The course on moral philosophy embraced, besides ethics proper, lectures on political philosophy or the theory of government, and from 1800 onwards a separate course of lectures was delivered on political economy, then almost unknown as a science to the general public. |
| | On the death of Brown in 1820 Stewart retired altogether from the professorship, which was conferred upon John Wilson, better known as "Christopher North," From 1809 onwards Stewart lived mainly at Kinneil House, Linhithgowshire, which was placed at his disposal by the Duke of Hamilton. |
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