1691 - matriculated from St John's College, Oxford. 1699 - called to the bar. 1701 [circa] - invented and perfected his seed drill. 1731 - Horse-Hoeing Husbandry, published. 1714 - returned to England after travelling through Europe studying agricultural processes. 1735 - A Supplement to the Essay on Horse-Hoeing Husbandry, published. 1738 - Addenda to the Essay, published. 1739 - Conclusion, published.