Here's a good essay by Calvin on the subject (although I don't know where he gets off calling it "short.")
This perverse opinion, after it was once received, engendered numerous other superstitions. First of all comes that carnal adoration which is mere idolatry. For to prostrate ourselves before the bread of the Supper, and worship Jesus Christ as if he were contained in it, is to make an idol of it rather than a sacrament. The command given us is not to adore, but to take and eat. That, therefore, ought not to have been presumptuously attempted...43. OTHER ABUSES ARISING OUT OF AN IMAGINARY BODILY PRESENCE.
I scanned this drivel for scripture references and found these:
John 6:55 is graced with the following commentary: "If these words are not to go for nothing, it follows that in order to have our life in Christ our souls must feed on his body and blood as their proper food." OK.
John 1:32 is mentioned because St. John the Baptist saw a dove and identified it as the Holy Spirit. OK.
The discourse on the Eucharist in 1 Corinthians 11 is mentioned in two ways, that is shows the death of Our Lord and that it should be taken worthily. OK.
Finally, Luke 22:19 is said to indicate that when Christ gave the commandment to "do this in memory of Him" to the Apostles, He did not give it to them as priests. No further scriptural support is offered for this, we are to take Papa Calvin's word that this is what that simple commandment of Christ really meant.
So, except for the last one, Papa Calvin has only trivial and non-controversial observations to offer about the scripture. Indeed, the Eucharist is Christ's body, appears under the accident of bread just like the Holy Spirit appeared as a dove, is to be taken reverently and is to remind us of Christ's death and redemption of sin. Regarding his fantastic reading of St. Luke, we have mere "Calvin said so".
So wat fills this 60 chapters that an AWANA kid would not figure out from the scant verses mentioned? Angry extrascriptural speculation. Here is a sample of Papa Calvin's reasoning skill:
the devil has introduced the fashion of celebrating the Supper without any doctrine, and for doctrine has substituted ceremonies partly inept and of no utility, and partly dangerous, having proved the cause of much mischief. To such an extent has this been done, that the Mass, which in the Popish Church is held to be the Supper, is, when well explained, nothing but pure apishness and buffoonery. I call it apishness, because they there counterfeit the Lord's Supper without reason, just as an ape at random and without discernment imitates what he sees done.
Wipe the froth off his mouth and you'll see -- nothing.