This is truly a vest-pocket book, being 3½ inches long, 2½ inches wide and ⅝ inch thick! This little book will be found an excellent one for student's use. There may be critics who would object to see "Paget's Disease of the Nipple" defined as an "eczema," or the statement that "pyo-nephrosis" is a necessary or common sequence of hydronephrosis; and above all, students should be taught the etymology of words used in medical science, altogether omitted from this little lexicon. Nevertheless its form is most convenient, and it is destined to be immensely popular. We therefore urge the author to include the etymon of each word in the next edition.