The righting couple of the wedges of immersion and **emersion** will be ZwydA tan 8.y =w tan 0Zy 2 dA =w tan 0.Ak 2 ft.

Of the wedge of immersion and **emersion**, will be the C.P. with respect to FF' of the two parts of the water-line area, so that b 1 b 2 will be conjugate to FF' with respect to the momental ellipse at F.

He carefully studied also the history of the ant and was the first to show that what had been commonly reputed to be "ants' eggs" are really their pupae, containing the perfect insect nearly ready for **emersion**, whilst the true eggs are far smaller, and give origin to "maggots" or larvae.