With the sudden and immature death of the Author, this work, which was planned to comprise 2I volumes has had to end with the I8th. From a number of students and art critics requests have reached the publisher and myself that an index should be made of the volumes which have been published. Herein their desire has been satisfied. This general index is divided into two parts: one for names of places, so that with the greatest ease and without loss of time the student can find all the Italian paintings from early Christian times up to the end of the Quattrocento, which are scattered throughout the churches, galleries and private collections of Europe and America. For the larger towns the material is divided into the following headings: I Churches and Monasteries. II Public Collections. III Public Buildings and Streets. IV Private Collections. and this order, though not indicated, has always been followed for the smaller localities. The second division contains the names of artists, each one accom- panied by dates and where possible an indication of the site of his activity. The chief aim of this index is to make it easier to consult the enormous amount of material treated in the I8 volumes. For the traveller who desires to know what paintings are to be found in any town this index should be a valuable vade-mecum.