Deepertruth: Eucharistic Miracle of Blanot, France 1331

ST. LEO I  (Alt)
"When the Lord says: 'Unless you shall have eaten the flesh of the Son of Man and shall have drunk His blood, you shall not have life in you,' you ought to so communicate at the Sacred Table that you have no doubt whatever of the truth of the Body and the Blood of Christ. For that which is taken in the mouth is what is believed in faith; and in do those respond, 'Amen,' who argue against that which is received."
-"Sermons" [91,3] ante 461 A.D.

The priest placed the Host on her tongue, turned, and started walking toward the altar. He did not notice that a Particle from the Host fell and landed upon a cloth that covered the woman’s hands. Thomas Caillot, who was assisting at the Mass went to the altar and said: “Father, you must return to the rail because the Body of Our Lord fell from the mouth of this lady onto the cloth.” 
The priest immediately went to the woman, still kneeling at the railing, but instead of finding the Host on the cloth, he saw a small spot of Blood. When Mass was over, the priest took the cloth into the sacristy and placed the stained area in a basin filled with clear water. After washing the spot and scrubbing it numerous times, he found that it had become darker and larger (reaching about the size and shape of a Host). Moreover, the water in the basin turned Bloody. The priest took a knife and, after washing the cloth, cut from it the piece bearing the Bloody imprint of the Host. He held up the Sacred Host and said: “Good people: here is the Precious Blood of Our Lord Jesus Christ. I sought in every way to wash and to wring the stain from the cloth, and in no way was I able to do so.”