Conversation so far:
When did John Bowring become a political economist?
John Bowring had begun contributing to the newly founded Westminster Review and had been appointed its editor by Bentham in 1825.
What was John Bowring's biggest achievement in this area?
By his contributions to the Review John Bowring attained considerable repute as a political economist and parliamentary reformer.
Where was John Bowring living during the time of his career as a political economist?
John Borwing lived in London during his career as a political economist.
What else did John Bowring achieve in this career?
John Borwing was a member of the 1831 Royal Commission.
What did John Bowring do in this role?
As a member of the 1831 Royal Commission, John Bowring advocated strict parliamentary control on public expenditure.
When did John Bowring achieve reforms on control on public expenditure?
Did John Bowring have any other achievements during this time?
The University of Groningen conferred on him the degree of doctor of laws in February the next year for his Sketches of the Language and Literature of Holland.
Did John Bowring receive any other degrees besiders his degree of doctor of laws?
John Bowring's last formal education was at a Unitarian school in Moretonhampstead and he started work in his father's business at age 13.

Question: Why wasn't he appointed professor of English or History?
Self-contained rewrite: Why wasn't John Bowring appointed professor of English or History?