He certainly did not retire from scientific work but, free of the huge demands of the job at the Mint for which he had received a fair salary, he was able to complete many tasks which he and his father had started but had never reached completion.
Siya tiyak hindi-retire mula sa pang-agham ng trabaho ngunit, libre ng malaking-malaking demands ng trabaho sa Mint na kung saan siya ay nakatanggap ng isang makatarungang suweldo, siya ay able sa kumpletong maraming mga gawain na kung saan siya at ang kanyang ama ay nagsimula ngunit nagkaroon na hindi umabot sa pagtapos.