The use of this book is fourfold:<br><br>1. It serves for short visits to Our Lord in the tabernacle.<br><br>2. It is designed to serve still better for long visits to the Blessed Sacrament. By means of it, half-hours and hours of adoration may be spent before the Tabernacle in the most fruitful and interesting manner; hence the sub-title has been affixed. It is indeed specially intended as a vade mecum for those pious souls who, as members of Eucharistic Leagues and Confraternities, are accustomed to keep the weekly or monthly Hour of Adoration.<br><br>3. It tends to inculcate and to foster devotion to the Holy Ghost, in connection with devotion to the Holy Eucharist.<br><br>4. It is finally a Prayer-Book for all ordinary occasions and devotions, especially for Mass and Holy Communion.