Diagrams, 'Diagram showing curves of equal stress-difference due to the weight of second harmonic inequalities or to tide-generating force' by G H [George Howard] Darwin A geometrical diagram showing two axes labelled 'equator' and 'pole', with curves radiating from them. Latitude is marked on the curves in degrees from 15 to 75. Accompanied by an engraved print of the same. Subject: Physics The printed diagram was published in volume 38 of the Proceedings of the Royal Society alongside the paper 'Note on a previous paper'. 1885