The Catholic Church, bearing this in mind, took care even from the beginning to bring the little ones to Christ through Eucharistic Communion, which was administered even to nursing infants. This, as was prescribed in almost all ancient Ritual books, was done at Baptism until the thirteenth century, and this custom prevailed in some places even later … But to remove the danger that infants might eject the Consecrated Host, the custom obtained from the beginning of administering the Eucharist to them under the species of wine only.
This practice later died out in the Latin Church, and children were not permitted to approach the Holy Table until they had come to the use of reason and had some knowledge of this august Sacrament. This new practice, already accepted by certain local councils, was solemnly confirmed by the Fourth Council of the Lateran, in 1215, which promulgated its celebrated Canon XXI, whereby sacramental Confession and Holy Communion were made obligatory on the faithful after they had attained the use of reason, in these words: “All the faithful of both sexes shall, after reaching the years of discretion, make private confession of all their sins to their own priest at least once a year, and shall, according to their capacity, perform the enjoined penance; they shall also devoutly receive the Sacrament of Holy Eucharist at least at Easter time unless on the advice of their own priest, for some reasonable cause, it be deemed well to abstain for a while.”
This practice of preventing the faithful from receiving on the plea of safeguarding the august Sacrament has been the cause of many evils. It happened that children in their innocence were forced away from the embrace of Christ and deprived of the food of their interior life; and from this it also happened that in their youth, destitute of this strong help, surrounded by so many temptations, they lost their innocence and fell into vicious habits even before tasting of the Sacred Mysteries. And even if a thorough instruction and a careful Sacramental Confession should precede Holy Communion, which does not everywhere occur, still the loss of first innocence is always to be deplored and might have been avoided by reception of the Eucharist in more tender years.
**But worse still is the practice in certain places which prohibits children who have not yet made their First Communion from being fortified by the Holy Viaticum, even when they are in imminent danger of death; and thus, when they die they are buried with the rites due to infants and are deprived of the prayers of the Church. **
Moreover, the fact that in ancient times the remaining particles of the Sacred Species were even given to nursing infants seems to indicate that **no extraordinary preparation should now be demanded of children who are in the happy state of innocence and purity of soul, and who, amidst so many dangers and seductions of the present time have a special need of this heavenly food. **