The long bow continued to be the chief arm of the foot soldiers, and was used with great dexterity and fatal effect. Targets were set up by law in every parish, and the yeomen were required to practice frequently at contests in archery. The principle wars were the civil wars and those with France. IV. Literature, Learning, and Art 322. Introduction of Printing; Books. The art of printing was introduced into England about 1477 by Caxton, a London merchant. Up to that time all books had been written on either parchment or paper, at an average rate of about fifty cents per page in modern money. The age was not favorable to literature, and produced no great writers; but Caxton edited and published a large number of works, many of which he translated from the French and Latin. The two books which throw most light on the history of the times are the "Sir John Paston Letters" (1424-1506), and a work by Chief Justice Fortescue on government, intended for the use of Prince Edward (slain at Tewkesbury). The latter work is remarkable for its bold declaration that the King "has the delegation of power from the people, and he has no just claims to any other power than this." The chief justice also praises the courage of his countrymen, and declares with honest pride that "more Englishmen are hanged in England in one year for robbery and manslaughter than are hanged in France in seven years." 323. Education. Henry VI took a deep interest in education, and founded the great public school of Eton, which ranks next in age to that of Winchester. The money for its endowment was obtained by the appropriation of the revenues of alien or foreign monasteries which had been erected in England, and which were confiscated by Henry V. The King watched the progress of the building from the windows of Windsor Castle, and to supplement the course of education to be given there, he furthermore erected and endowed the magnificent King's College, Cambridge. 324. Architecture. There was a new development of Gothic architecture in this period, the Decorated giving place to the Perpendicular. The latter derives its name from the perpendicular divisions of the lights in the arches of the windows. It marks the final period of the Gothic or Pointed style, and is noted for the exquisite carved work of its ceilings. King's College Chapel, Cambridge, St. George's Chapel, Windsor, and Henry VII's Chapel (built in the next reign), connected with Westminster Abbey, are among the most celebrated examples of this style of architecture, whic his peculiar to England. The mansions of the nobility at this period exhibited great elegance. Crosby Hall, London, at one time the residence of Richard III, was one of the best examples of the "Inns" of the great families and wealthy knights. The Hall was pulled down in 1903, but it has been reerected on the Chelsea Embankment, on the Thames. V. General Industry and Commerce 325. Agriculture and Trade.