A compendious system of natural philosophy: with notes containing the mathematical demonstrations, and some occasional remarks. In four parts. By J. Rowning, ...
Rowning, J.(John),1701?-1771.
London : printed for Sam. Harding,
1744 [1751]
Part 1, fourth edition, is dated 1745 and has an appendix with separate pagination and register; part 2, fifth edition, 1751, has a "Part II. Continued" titlepage, third edition, 1745, before p. 83; part 3, second edition, 1743 breaks off at p. 96 to end the first volume; vol. 2 after the general titlepage begins with the "Part III. Continued" titlepage, second edition, 1743; part 4, 1742, has a "Part IV. Continued" titlepage, 1743, before p. 147 and contains the index "to the whole"  as well as 'Material errata' for part 2, second edition; part 3, "first edition"; part 3 (again), second edition; and part 4, "first edition".
The two volumes, each with a collective titlepage, contain four main parts, each with separate titlepage, pagination and register.
ESTC