In 1616 Dirk Hartog discovered the island bearing his name.
Hartog has endeavoured to show that it can only he formed by a dual force, analagous to that of magnetism, the spindle-fibi es being comparable to the lines of force in a magnetic field and possibly due to electrical differences in the cell.
Hartog, The Dual Force of the Dividing Cell, Proc. Roy.
Dirk Hartog had been on the west coast in latitude 26° 30' S.
These are especially conspicuous in two rings (After Hartog, from Cambridge Natural History, vol.
Gosse, The Rotifera (1886), and supplement (1889); Marcus Hartog, "Rotifera," in Cambridge Natural History, vol.
Hartog, " Universities, Schools and Examinations " in the University Review (July 1905); P. J.
Hartog and Mrs A.