George Brant Bridgman was a Canadian-American artist, teacher and writer. Born in Canada he spent most of his working life in the USA teaching anatomy and figure drawing at the Arts Students League of New York. His students included many future famous artists including Will Eisner, Marion Greenwood, Andrew Loomis and Norman Rockwell.
Good, but still hard to understand. Most books on drawing seem to be. Still worth the study. Many good examples by illustration. Which you are to copy.
Rambling and disjointed. This book has some good information on it, but it's buffered by rambling pages about artists and random historical figures for no apparent reason.
You have to understand the human anatomy to get this, well I think it is really part of learning drawing. He has nice tips and tricks to practice sketching.