The following notes are offered in the hope that they may be of some use to teachers and students who are using (as the writer has for some years used) Salmond's Jurisprudence as a text-book for the subject of the Nature and Classification of Rights. They do not pretend to be systematic, and they are meant to be supplementary to the excellent and informative notes of Mr. J. L. Parker to the ninth edition. The page references are to the ninth edition; the section references (§§) will serve for earlier editions as well.