[His] chief work was done in his study, where he was constantly to be found in an arm-chair with his writing board resting across his arms, engrossed in toilsome arithmetical or analytic processes.
[Kanyang] chief trabaho ay tapos na sa kanyang pag-aaral, kung saan siya ay patuloy na matatagpuan sa isang braso-chair sa kanyang pagsulat board resting sa kabuuan ng kanyang armas, wiling-wili sa mahirap arithmetical o analytic proseso.