In the 1715 edition, for the reasons explained by Watts in his Preface, there are only two moral songs, namely "The Sluggard" and "Innocent Play." Those added later are included in this Addendum. The texts are from an 1866 printing in New York, posted into the public domain by the Christian Classics Ethereal Library (CCEL) at

//www.ccel.org/ccel/watts/divsongs.html