From 1890 to 1895 he was a College Lecturer, being influenced by Cayley during this period, then he became a University Lecturer until 1914.
Mula sa 1890 na 1895 siya ay isang College lektor, ay naiimpluwensyahan ng Cayley panahon na ito, at pagkatapos, siya ay naging isang University lektor hanggang 1914.