This volume contains the complete Mesklin writings of Hal Clement.
Mission of gravity Under Lecture demonstration Star light Whirligig world Addendum to Whirligig world I discover Hal Clement / by Anthony R. Lewis The Perfect hard SF novel / by Mark L. Olson
Harry Clement Stubbs better known by the pen name Hal Clement, was an American science fiction writer and a leader of the hard science fiction subgenre.
I just finished "Mission of Gravity," which I read for the first time sometime in the 1980s. Having read it again I was gratified to recognize new layers to the story. Clement was a master.