The present work is a systematic study of all the Samskaras enjoined to be performed at the various epochs in the life of an individual from conception to crematorium. It cites parallels in other religions to show that they are universal and have a recognised place in ancient cultures and are still represented within the limits of modern religion. It also shows that the sacramental beliefs and practices, far from being an irrational priestcraft, are consistent and logical and have practical utility and intention. This work discusses the source, meaning, number, purpose and the constituents of Samskaras grouped under five heads: prenatal, natal, educational, nuptial and funeral.