The ELEMENTS of PLANE GEOMETRY; containing the First Six Books of Euclid, from the Text of Dr. Simpson, Emeritus Professor of Mathematics in the University of Glasgow; with Notes, Critical and Explanatory. By THOMAS KEITH. In svo. price 10s. 6d. The ELEMENTS of LAND-SURVEYING, in all its Branches, including Practical Geometry, Trigonometry, Land Measuring by the Chain, Plane, Table, Theodolite, and other Instruments; the entire Practice of Hilly Ground; the Division of Land; Plotting and Mapping. By ABRAHAM CROCKER, Land Surveyor, of Frome, in Somersetshire. Illustrated with Copper-plates, also with upwards of One Hundred Wood-cuts. Third Edition, 9s. boards.

RECREATIONS in MATHEMATICS and NATURAL PHILOSOPHY; First composed by M. Ozanam, of the Royal Academy of Sciences, &c.; lately re-composed, and greatly enlarged in a new Edition, by the celebrated M. Montucla, and now translated into English, and improved with many Additions and Observations. By CHARLES HUTTON, LL. D. and F.R.S. In 4 vols. 8vo. (with near 100 Copper-plates) price 51. 5s. boards.

CONVERSATIONS in ALGEBRA. Being an Introduction to the First Principles of that Science; in a Series of Dialogues, designed for those who have not the Advantage of a Tutor, as well as for the Use of Students in Schools. By WILLIAM COLE.

12mo.

LETTERS on ENGLISH HISTORY, for the Use of Schools, By J. BIGLAND. In 12mo. price 6s. boards.

GEOGRAPHY for YOUTH, adapted to the different Classes of Learners. By the Rev. JOHN HARTLEY. In 12mo. (the 2d Edit.) price 4s. 6d. bound.

A COMPENDIUM of GEOGRAPHY, for the Use of Schools, Private Families, and those who study this necessary Science. By RICHMAL MANGNALL, Author of "Historical Questions.'

9s. bds.

An INTRODUCTION to the GEOGRAPHY of the NEW TESTAMENT; comprising a Summary Chronological and Geogra phical View of the Events recorded respecting the Ministry of our Saviour. By Lant CARPENTER, LL. D. with Maps. Price 4s. boards.

CONVERSATIONS on BOTANY, with Twenty Engravings. In 1 vol. 12mo. price 7s. 6d. plain, or 10s. 6d. coloured.

The object of this Work is, to enable young Persons to acquire a knowledge of the Vegetable Productions of their Native Country: for this purpose the arrangement of Linnæus is briefly explained, and a Native Plant of each Class (with a few exceptions) is examined, and illustrated by an Engraving; and a short account is added of some of the principal Foreign Species.

CONVERSATIONS on CHEMISTRY. In which the Elements of that Science are familiarly explained and illustrated by Experiments. In 2 vols. 12mo. with Plates by Towry. 14s. boards.

CONVERSATIONS on POLITICAL ECONOMY; in which the Elements of that Science are familiarly explained. By the Author of "Conversations on Chemistry." The 2d Edition, improved, in 1 large vol. 12mo. price 9s. boards.