Arithmetica decimalis oder rechenkunst der geometrischen zehen theiligen ruthen, [and] Tractatus von der fortification, 1648-1649


Date: 1648-1649 | Size: 1 volume(s), 1 volume, ca. 202 p.


This volume contains two selections: the first are problems in geometry and trigonometry, and the second concerning fortifications and their layout. Note on fly-leaf says this volume was found in the Bastile.

Collection Information

Physical description

1 volume, ca. 202 p.


Received and accessioned, 1905 (19192).

Custodial history:

A note on the fly-leaf states: "Found in the Bastile and presented by Peter S. Du Ponceau Esqr to Wm Duer junr the 12 of Nov. 1796. W. Duer, Junior."

Early American History Note

This interesting volume, supposedly found in the Bastille and transferred to Peter DuPonceau in the 19th century, contains information on mathematics and military science. The cover is ornamentally decorated in ink, some of which is colored. The text contains a section on geometry and trigonometry that includes many diagrams and calculations. The second part contains information on fortification and military sciences, some of which seems to apply the mathematics of the previous section to artillery and fortification design. The section on fortifications contains drawings and sketches of forts.

Indexing Terms


  • Military Records
  • Scientific Data
  • Sketches.

Personal Name(s)

  • Du Ponceau, Peter Stephen, 1760-1844
  • Duer, William Alexander, 1780-1858
  • Rauschardt, Felix Hannibal.


  • Beyond Early America
  • Fortification.
  • Geometry.
  • Mathematics.
  • Military History
  • Science and technology
  • Trigonometry.