In addition, a number of smaller areas of the Arctic remain relatively ice-free during a portion of the winter. These ice-free areas or polynas are generally associated with deep ocean currents, wind currents, unique coastline configurations, and/or freshwater drainages.

Not permitted to remain in the Academy, he was, after three years (1700) made district magistrate of Chʻien-chiang, Hupeh.

The Marsh rebuilding, with the higher-pitched and larger boiler and new standard boiler mountings, completely altered the appearance of the engine, which in its last guise was a very handsome machine; but unsteadiness in running at speeds over 50 m.p.h. resulted in no further such conversions being made.

All in all, Jack's a very practical chap.