Two other papers which he published in the same year in publications of the Royal Society of Edinburgh were on the scalar functions of a vector and on an application of quaternions to differential equations.
Dalawang iba pang papeles na kung saan siya nai-publish sa parehong taon sa mga pahayagan ng Royal Society ng Edinburgh ay sa skeilar pag-andar ng isang vector at sa isang application ng quaternions sa kaugalian equation.