Preliminary Discourse on the Study of Natural Philosophy

Sir John Frederick William Herschel, 1st Baronet KH FRS (1792–1871), was an English polymath, mathematician, astronomer, chemist, inventor, and experimental photographer who also did valuable botanical work. The only son of Mary Baldwin and noted astronomer William Herschel, he followed in his father's footsteps both in astronomy and in receiving a knighthood. Herschel's education was extensive an...