The harmony between the old and present non-conformists principles : in relation to the terms of conformity, with respect both to the clergie, and the people : wherein a short history of the original of the English liturgy, and some reasons why several truly conscientious Christians cannot joyn with the church in it : humbly presented to publick consideration in order to the obtaining some necessary relaxation and indulgence : to which are added some letters that pass'd between the Lord Cecil, and Arch-bishop Whitgift.