Page:Frontinus - The stratagems, and, the aqueducts of Rome (Bennet et al 1925).djvu/40

Rh been mischievously doubled and tripled in places words have been changed and lacunae filled in.

In the mathematical part of the work, the numbers are often quite obviously incorrect, although it is hard to tell whether the inaccuracies are to be attributed to the author, whose interests were not primarily in the field of mathematics, and who may have used approximate figures at times, or to the copyist, who did not understand the signs or who may have erred in the substitution of the names of the figures for their symbols.

The title of the work given in C is de aqueductu urbis Romae; that of the early editions, de acquaeductibus; for these infelicities Bücheler has substituted the title suggested by Heinrich, de aquis urbis Romae.

The division into two books is indicated in C and in the codex Urbinus. The numbers of the chapters were added by Poleni. For a new collation of C, cf. Petschenig, [https://archive.org/details/wienerstudien02wiengoog/page/n259/mode/2up Wien. Stud. vi. (1884), p. 249.] For a facsimile of the manuscript, cf. Clemens Herschel, The Two Books on the Water Supply of the City of Rome. xxxiv