The number of words in the working vocabulary is under 750, and they are those most frequently employed by Caesar in the Gallic War. The words given in each of the earlier vocabularies are used frequently in succeeding exercises to familiarize the student with them and to give facility in their use. For this reason extreme brevity has not been aimed at in the sentences, though they are extremely simple in construction. The sentences can thus be made to mean something to the pupil.