Originally published in 1888 as part of the Pitt Press Series, this book contains the Latin text of the 21st book of the monumental history of Rome by Titus Livius, which deals with the beginning of the Second Punic War and Hannibal's crossing of the Alps. The history is prefaced with an introduction to Livy's sources and a guide to his dense style, as well as a map of contemporary Spain, a thorough commentary on the text and a vocabulary list. This book will be of value to anyone with an interest in Livy or the history of the wars between Carthage and Rome.