From "Puritan Paperbacks"

I've been working through a study on the Lord's Supper - leaving one church, looking for another - I find kinship in those congregations with a rich liturgy, could find a place in a Lutheran church (LCMS), but I cannot and will not be in a church with closed communion.

What does the "Lord's Supper" mean and what is it supposed to represent?

I've just finished reading the "Epistle to the Reader" (the message in the beginning of the book from Watson).

When I contemplate the holiness and solemnity of the blessed sacrament, I cannot but have some ache upon my spirit, and think myself bound to hold this mystery in the highest veneration.  The elements of bread and wine are in themselves common but, under these symbolical representations, lie hid divine excellencies.  Behold here the best of dainties, God is in his cheer.  Here is the apple of the Tree of Life; here is the "banqueting house" where the banner of free grace is gloriously displayed, "He brought me to the banqueting house, and his banner over me is love" (Song of Sol. 2:4)

Watson strove for the "correct middle" - between two extremes that he thought should be avoided - transubstantiation (which he believed was contrary to reason and Scripture and that - he thought - profaned Christ's institution of the supper; and mere symbolism, which aimed short of the mystery and fell short of the comfort.

According to the forward, Watson built on the teachings of Calvin, who believed that this sacrament was a means of grace, through faith - in which Christ works effectually within the believer.