The grounds and rules of musick explained, or, An introduction to the art of singing by note : fitted to the meanest capacities / by Thomas Walter, M.A. ; Recommended by several ministers.

Date of publication supplied by Evans. Another issue (not in Evans or Bristol) has imprint: Boston: Printed and sold by Benjamin Mecom at the new printing-office near the Town-House, 1760.
Printed in two columns.
T.p.: p. [1] (1st group); "Thoughts on poetry and musick: by Dr. Watts."--p. [2] (1st group); "A recommendatory preface": p. i-iii; chart of musical characters: p. [iv]; text: p. 1-25; blank: [1] leaf; music: leaves of plates 1-20; blank: 2 leaves.
Library's copy has the final two leaves of the volume as published numbered "21"-"22" by hand, followed by additional pages in manuscript numbered 23-60 and containing 20 p. of music, then 20 with financial accounts dated 1783-1793.