Eliza A. Bowen, Popular Science Monthly (1882)
“ They finally settled for themselves that the moon revolves once on its axis while it moves once round the earth. I gave them no further help than the question I have just stated. I have not yet had pupils trace the moon's path and that of the sun so accurately as to discover the nodes, but I certainly shall try to do so, and to have the retrograde motion of the nodes detected; the time (approximate) of their revolution. I shall pass over nothing that ordinary eyes can see, ordinary minds reason out. The study of planets affords delightful work. ”
