Daboll's schoolmaster's assistant, improved and enlarged. Being a plain practical system of arithmetic: adapted to the United States.

Mode of access: Internet.MiU copy 2: Upper corner of p. 11-12 torn away; lower corners badly worn.MiU copy 2: 18 cm. Last two figures of imprint date obliterated.MiU copy imperfect: p. 29-32 lacking; part of p. 13-14 and 27-28 torn away; p. 19-28, 33-40 and 45-46 badly worn