A comparison of the Parliamentary protestation with the late canonicall oath and the difference betwixt them. As also the opposition betwixt the doctrine of the Church of England, and that of Rome. So cleared, that they who made scruple of the oath, may cheerfully and without doubt addresse themselves to take the protestation. As also a further discussion of the case of conscience, touching receiving the Sacrament of the Lords Supper, when either bread or wine is wanting, or when by antipathy or impotence, the party that desires it cannot take it. Wherein the impiety, injury and absurdity of the Popish halfe communion is more fully declared and confuted. Both which discourses were occasioned by a letter of a lay-gentle-man, lately written to the authour, for his satisfaction touching the matters fore-mentioned