Our aim in preparing this monograph has been not only to
try to present an accurate picture of the current status of
dislocation theory, as a branch of continuum mechanics, but also
to illustrate an important application of modern differential
geometric ideas in physics. This is the proper place to
acknowledge a debt of gratitude to Professor C. C. Wang who has been
the outstanding major contributor to this important new area of
continum physics. Finally the author would like to thank
Mrs. Margaret Robinson, for the excellent job of typing she has
done, and the college of Science and Mathematics at USC for a
grant during the summer of 1975 which enabled me to complete the
greater part of the work presented here.