His publications include "Direct Microscopic Examination as Applied to Preventive Medicine and the Newer Therapy" and "Tuberculosis and Its Diagnosis." As the scope of this expedition was wider than that of the previous ones, contemplating more extensive tidal observations for the United States Coast and Geodetic Survey, and, if conditions permitted, lateral sledge trips east to Cape Morris K.Jesup and west to Cape Thomas Hubbard, I enlarged my field party, as it may be called, and added to the expedition Mr.Donald B.MacMillan, of Worcester Academy, and Mr.
George Borup, of New York City.
MacMillan is the son of a sea captain and was born at Provincetown, Mass., in 1874.

His father's ship sailed from Boston nearly thirty years ago and was never heard from again.

His mother died the next year, leaving the son with four other young children.

When MacMillan was fifteen years old he went to live with his sister at Freeport, Me., where he was prepared in the local high school to enter Bowdoin College, being graduated from my alma mater in 1898.

Like Borup, MacMillan excelled in undergraduate athletics, played half-back on the Bowdoin 'varsity eleven and won a place on the track team.