Of this publication the Part 16 sent us, containing motets for singing at the Benediction of the Blessed Sacrament, is a collection well suited for use at that function. But we must object to the title of the general work, as neither this nor any figured _music_ can be sung by ecclesiastics, as such, officiating in any service of the Catholic Church. The only melody properly styled _musica ecclesiastica_ is the Gregorian chant. Definitions are always of grave moment. Suppose that some one of our enterprising publishers should present the public with a manual of prayers such as the _St. John’s Manual_, the _Key of Heaven_, or the _Mission Book_ under the title of “Manual for the Clergy, consisting of prayers, litanies, hymns, and other devotions _for the service of the Catholic Church_”; it is plain that it would not receive the imprimatur of a Catholic school-boy. Under a proper title we give our hearty encouragement to the work which our German Catholic brethren abroad and here in the United States have within the last few years pursued with such praiseworthy zeal in the composition of music for the use of our choirs, which, if we do not think it to be the most suitable and most consistent in tone with the letter and spirit of the Catholic ritual, is decidedly a vast improvement upon the sensual, operatic style of music whose melodies and harmonies have emasculated the devotion and vitiated the taste of, we regret to say, almost the majority of Catholics in modern times. THE COMPREHENSIVE GEOGRAPHY. Nos. 1, 2, and 3. New York: P. O’Shea, 37 Barclay St. 1876. We are inclined to think that this series is the best of the many which have of late years been presented to the public, and certainly do not know of any which are superior to it in any respect except in the department of physical geography; and it is as complete even in this as it could well be without an additional volume specially devoted to that subject. The feature which should particularly recommend it to Catholics is the prominence which it gives to facts connected with religion. There is no branch of study for the young in which it is so important that religion should be prominent as geography, with the exception, of course, of history. Even the best text-books hitherto published are perhaps a little too reticent in this respect. The desire to accomplish this object has in the present work led to the introduction of some rather unnecessary details; but this is a fault on the right side. We hope that this series will become popular, as it deserves to be, in Catholic schools. THE COMPLETE OFFICE OF HOLY WEEK ACCORDING TO THE ROMAN MISSAL AND BREVIARY. In Latin and English. New edition. Revised and enlarged. 18mo, pp. 563. New York: The Catholic Publication Society. 1877.