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ABSTRACTThe practice of abandoning all but the most accurate among a set of alternative forecasting methods is shown to result in the loss of potentially useful information. The particular case of two forecasts is considered in detail. It is demonstrated practically that the inclusion of even a relatively poor forecasting method can enhance a superior one significantly.

Thirty-two subjects participated in an experiment to test the equiavailability principle with respect to cognitive maps. Subjects learned one of four different combinations of two routes. They were then expected to make judgments concerning orientation and distance to points either experienced or inferred and either within a learned pathway or between learned pathways. The pathways also varied in terms of degree of symmetry. It was found that although orientation was equivalent in terms of errors for experienced and inferred movements, distance estimations were inferior for inferred movements. Similarly, the majority of dependent variables showed superior accuracy for judgments regarding within-pathway movements compared with between-pathway movements. Some impact of pathway symmetry was found. The results do not support the equiavailability principle.

L'historiographie de la dynamique démographique des populations américaines a beaucoup insisté sur leur chute dramatique suite au choc microbien. En raison de sources relativement abondantes, la vallée du Saint-Laurent constitue une aire privilégiée pour l'observation de l'évolution des populations autochtones. Suite à une première série d'épidémies dans les années 1630, les effectifs baissent d'environ 500 à environ 200 individus. Ces pertes sont compensées par des migrations importantes de Hurons dès les années 1650, et d'Iroquois et d'Abénakis par la suite, qui permettent de largement dépasser les effectifs initiaux. Au XVIIIe siècle, la population des villages auprès des défrichements français se stabilise autour de 2 500 individus et se gonfle jusqu'à plus de 4 000 en temps de guerre avec l'arrivée des réfugiés. Les résultats de cette enquête soulignent la capacité des populations amérindiennes à se maintenir et même à croître sur un territoire donné, longtemps après l'arrivée des Européens ainsi que l'importance des migrations dans la dynamique démographique autochtone.

First published, 1853. ; Bibliography: p. [iii]-iv. ; Introductory.--The theory in Cannon row.--The practice in Leadenhall street.--The Ryotwar system.--The judicial system.--Finance and public works.--The political system.--The system of parliamentary legislation for India.--Appendix. ; Mode of access: Internet.

v. 1. The speech of John Dickinson . May 24th, 1764 . praying the king for a change of the government of the province. 1764.--The late regulations respecting the British colonies on the continent of North America . 1765.--An address to the committee of correspondence in Barbadoes . 1766.--The farmer's letters to the inhabitants of the British colonies. 1767.--An essay on the constitutional power of Great Britain over the colonies in America; with the resolves of the committee for the province of Pennsylvania . 1774. v. 2. Address of the Congress to the inhabitants of Quebec. Dated October 26th, 1774.--The [first] petition of Congress to the king .--The declaration by the representatives . setting forth the causes and necessity of their taking up arms. July 6th, 1775.--Second petition of Congress to the king .--Address of the Congress to the several states .--The letters of Fabius in 1788, on the federal Constitution; and in 1797 on the present situation of public affairs: with additional notes. ; Mode of access: Internet.

146, [2] p. ; 21 cm. (8vo) ; Letters signed: A farmer. Attributed to John Dickinson in the Dictionary of American biography. ; For the omission of a significant passage in this edition, see: Crosskey, William W. Politics and government, Chicago, 1953, p. 1289-1291. ; Adams notes two states. One has six lines of text on p. 55 and leaf T2 (p. [147-148]) is blank. The other has seven lines of text on p. 55 and on leaf T2 "To the ingenious author of certain letters, subscribed A farmer"--a letter ordered to be printed by the town of Boston, March 22, 1768.

38, [2] p. ; 21 cm. (8vo) ; Attributed to John Dickinson in the Dictionary of American biography. ; Two states noted: in one, page 11 ends "would be generally believed without the trial"; in the other, "would be credited without the trial." ; "Errata."--p. 38.

2, [2] p. ; 34 cm. (fol.) ; An unsigned petition, drawn up by John Dickinson in July 1764, protesting the General Assembly's proposal for a change from proprietary to royal government. ; Imprint supplied by Evans.