He also revised and wrote a commentary on Bowditch 's translation of the first four volumes of Laplace 's Traité de mécanique céleste which he had himself had proof-read as an undergraduate student.
Siya rin ang binagong at wrote isang kuro sa Bowditch 's pagsasalin ng unang apat na volume ng Laplace' s Traité de mécanique céleste na niya ang sarili ay patunay-basahin bilang isang undergraduate na estudyante.