In addition to words pertaining to the agricultural, biologic and physical sciences, this dictionary contains many literary terms, forms of irregular verbs and about five hundred common idioms. There are forty-three thousand entries in all. According to the author, not all names of animals, insects, plants and chemical compounds are included. Because of the scope of the work, medical terminology is necessarily limited. Typography is excellent and the volume easy to handle. It will be welcomed by scientific workers because of the great lack of material of this type.