From the point of view of the history of religion I would assign the liturgical texts to the second group in order of importance. Surprisingly few fragments from the long canonical daily prayer services have been found. In fact, about all of the perfected liturgies such as we know the Sumerian temples to have possessed belong to the cults of deified kings. In the entire religious literature of Nippur, not one approximately complete canonical prayer service has survived. Only fragments bear witness to their existence in the public song services of the great temples in Nippur. A small tablet(10) published in part two of this volume carries a few lines of the titular or theological litany of a canonical or musically completed prayer book as they finally emerged from the liturgical schools throughout Sumer. Long liturgical services were evolved in the temples at Nippur as we know from a few fragments of large five column tablets.(11) The completed composite liturgies or canonical breviaries as they finally received form throughout Sumer in the Isin period were made by selecting old songs of lament and praise and re-editing them so as to develop theological ideas. Characteristic of these final song services is the titular litany as the penultimate song and a final song as an intercession. A considerable number of such perfected services exist in the Berlin collection. These were obtained apparently from Sippar.(12) The writer has made special efforts to reconstruct the Sumerian canonical series as they existed in the age of Isin and the first Babylonian dynasty. On the basis of tablets not excavated at Nippur but belonging partly to the University Museum and partly to the Berlin collection the writer restored the greater part of an Enlil liturgy in part 2, pp. 155-167.(13) In the present and final part of this volume another Enlil liturgy has been largely reconstructed on pages 290-306.(14) From these two partially reconstructed song services the reader will obtain an approximate idea of the elaborate liturgical worship of the late Sumerian period. These were adopted by the Babylonians and Assyrians as canonical and were employed in interlinear editions by these Semitic peoples. Naturally the liturgical remains of the Babylonian and Assyrian breviaries are much more numerous and on the basis of these the writer was able in previous volumes to identify and reconstruct a large number of the Sumerian canonical musical services. But a large measure of success has not yet attended his efforts to reconstruct the original unilingual liturgies commonly written on one huge tablet of ten columns. Obviously the priestly schools of the great religious center at Nippur possessed these perfected prayer books but their great size was fatal to their preservation. It must be admitted that the Nippur collection has contributed almost nothing from the great canonical Sumerian liturgies which surely existed there.