Taylor: Plane Trigonometry .75 Taylor and Puryear: Elements of Plane and Spherical Trigonometry 1.25 Wentworth: Advanced Arithmetic 1.00 Wentworth: Analytic Geometry 1.25 Wentworth: College Algebra (Revised Edition) 1.50 Wentworth: Elementary Algebra 1.12 Wentworth: Higher Algebra 1.40 Wentworth: New School Algebra 1.12 Wentworth: Plane and Solid Geometry (Revised Edition) 1.25 Wentworth: Plane Geometry (Revised Edition); Solid Geometry (Revised Edition), each .75 Wentworth: Trigonometries (Second Revised Editions) (For list, see Descriptive Catalogue) Woods and Bailey: A Course In Mathematics Volume I 2.25 Volume II 2.25 * * * * * GINN AND COMPANY PUBLISHERS * * * * * Notes al-Mekk[=i] on a treatise on [.g]ob[=a]r arithmetic (explained later) called _Al-murshidah_, found by Woepcke in Paris (_Propagation_, p. 66), there is mentioned the fact that there are "nine Indian figures" and "a second kind of Indian figures ... although these are the figures of the [.g]ob[=a]r writing." So in a commentary by [H.]osein ibn Mo[h.]ammed al-Ma[h.]all[=i] (died in 1756) on the _Mokhta[s.]ar f[=i]`ilm el-[h.]is[=a]b_ (Extract from Arithmetic) by `Abdalq[=a]dir ibn `Al[=i] al-Sakh[=a]w[=i] (died c. 1000) it is related that "the preface treats of the forms of the figures of Hindu signs, such as were established by the Hindu nation." [Woepcke, _Propagation_, p. 63.]] which, of course, are interpolations. An interesting example of a forgery in ecclesiastical matters is in the charter said to have been given by St. Patrick, granting indulgences to the benefactors of Glastonbury, dated "In nomine domini nostri Jhesu Christi Ego Patricius humilis servunculus Dei anno incarnationis ejusdem ccccxxx." Now if the Benedictines are right in saying that Dionysius Exiguus, a Scythian monk, first arranged the Christian chronology c. 532 A.D., this can hardly be other than spurious. See Arbuthnot, loc. cit., p. 38. [1] "_Discipulus._ Quis primus invenit numerum apud Hebraeos et AEgyptios? _Magister._ Abraham primus invenit numerum apud Hebraeos, deinde Moses; et Abraham tradidit istam scientiam numeri ad AEgyptios, et docuit eos: deinde Josephus." [Bede, _De computo dialogus_ (doubtfully assigned to him), _Opera omnia_, Paris, 1862, Vol. I, p. 650.]