The manuscript appears to be a copy, not of the text as published, but of an earlier version. The arrangement is largely the same, but the text is not as full, it is in English only, and much of the text in this copy appears in footnote form in the printed book; in addition, the preface is not present. Although apparently a fair copy, there are a number of deletions, the most substantial of which are at folios 2 verso, 16, 28 verso , 29 verso and 30, and portions of the text are written on scraps of paper pasted to folios 16 verso, 34 verso and 35; folios 36-38, 41-42 are blank. The work, which is incomplete, lacking about ten leaves after folio 25 (being pages 51-70 in the original pagination), is followed (folio 39) by a synopsis of the work and (folio 43) by additions and amendments.