Sollemnia , an overwhelming weight of evidence goes to show that the history of the Roman Mass during the Middle Ages is the history of how it came to be increasingly misunderstood by the clergy as well as by the Faithful, and of how it began to disintegrate through the fault of the medieval liturgists themselves. A prominent feature of that process as Father Jungmann’s book shows, was the appearance, in the medieval Expositiones Missae , of those wrong conceptions we have already discussed: disproportionate emphasis on the Presence in the Holy Eucharist and a very sentimental notion of that Presence, which came to play so disastrous a part in the worship of the Romantic as well as the Baroque period. With regard only to our new electronic technology, it might baffle many to explain why there should be such a