EXERCISES ON BOOK IV, p. 196, &c.

EXERCISES ON BOOK VI, p.

Jes. ,46. 9 Pem.,46. T.H.,46.
10 Joh. ,23.
11 Cath., 30.

Euclid's Elements of Geometry, the First Six Books,

By R.

and the portions of the Eleventh and Twelfth Books read at Cambridge, with Geometrical Exercises, &c. POTTS, M.A., Trinity College, Cambridge.

THE UNIVERSITY EDITION, the Second, improved, 8vo. cloth, 10s. THE SCHOOL EDITION, the Fifth. 12mo. cloth, 4s. 6d.

Books I.-IV. 3s. ; Books 1.-III. 2s. 6d. ; Books I II. 1s. 6d.; Book I. 1s. THE ENUNCIATIONS OF EUCLID, 9d.

A Medal has been awarded to "R. Potts for the excellence of his works on Geometry" by the Jurors of the International Exhibition, 1862.-Jury Awards, p. 313.

"Mr. Potts' Euclid is in use at Oxford and Cambridge, and in the Principal Grammar Schools. It is supplied at reduced cost for National Education from the Depositories of the National Society, Westminster, and of the Congregational Board of Education, Homerton College. It may be added, that the Council of Education at Calcutta were pleased to order, in the year 1853, the introduction of these Editions of Euclid's Elements into the Schools and Colleges under their control in Bengal.”

"In my opinion Mr. Potts has made a valuable addition to Geometrical literature by his Editions of Euclid's Elements."-W. Whewell, D.D., Master of Trinity College, Cambridge.

"Mr. Potts' Editions of Euclid's Geometry are characterized by a due appreciation of the spirit and exactness of the Greek Geometry, and an acquaintance with its history, as well as by a knowledge of the modern extensions of the Science. The Elements are given in such a form as to preserve entirely the spirit of the ancient reasoning, and having been extensively used in Colleges and Public Schools, cannot fail to have the effect of keeping up the study of Geometry in its original purity.”— James Challis, M.A., Plumian Professor of Astronomy and Experimental Philosophy in the University of Cambridge.

"By the publication of these works, Mr. Potts has done very great service to the cause of Geometrical Science; I have adopted Mr. Potts' work as the text-book for my own Lectures in Geometry, and I believe that it is recommended by all the Mathematical Tutors and Professors in this University."-Robert Walker, M.A., F.R.S., Reader in Experimental Philosophy in the University, and Mathematical Tutor of Wadham College,

Oxford.

"When the greater Portion of this Part of the Course was printed, and had for sometime been in use in the Academy, a new Edition of Euclid's Elements, by Mr. Robert Potts, M.A., of Trinity College, Cambridge, which is likely to supersede most others, to the extent, at least, of the Six Books, was published. From the manner of arranging the Demonstrations, this edition has the advantages of the symbolical form, and it is at the same time free from the manifold objections to which that form is open. The duodecimo edition of this work, comprising only the First Six Books of Euclid, with Deductions from them, having been introduced at this Institution as a text-book, now renders any other Treatise on Plane Geometry unnecessary in our course of Mathematics."-Preface to a Treatise on Descriptive Geometry, &c., for the Use of the Royal Military Academy, by S. Hunter Christie, M.A., of Trinity College, Cambridge, Secretary of the Royal Society, &c., and Professor of Mathematics in the Royal Military Academy, Woolwich.

"Mr. Potts has maintained the text of Simson, and secured the very spirit of Euclid's Geometry, by means which are simply mechanical. It consists in printing the syllogism in a separate paragraph, and the members of it in separate subdivisions, each, for the most part, occupying a single line. The divisions of a proposition are therefore seen at once without requiring an instant's thought. Were this the only advantage of Mr. Potts' Edition, the great convenience which it affords in tuition would give it a claim to become the Geometrical text-book of England. This, however, is not its only merit."— Philosophical Magazine, January, 1848.

"If we may judge from the solutions we have sketched of a few of them [the Geometrical Exercises], we should be led to consider them admirably adapted to improve the taste as well as the skill of the Student. As a series of judicious exercises, indeed, we do not think there exists one at all comparable to it in our language-viewed either in reference to the student or teacher."-Mechanics' Magazine, No. 1175.

"The Hints' are not to be understood as propositions worked out at length, in the manner of Bland's Problems, or like those worthless things called 'Keys,' as generally 'forged and filed,'-mere books for the dull and the lazy,--in short, just so much (and no more) assistance is afforded as would, and must be, afforded by a tutor to his pupil. Mr. Potts appears to us to have hit the 'golden mean' of Geometrical tutorship."Mechanics' Magazine, No. 1270.

"We can most conscientiously recommend it [The School Edition] to our own younger readers, as the best edition of the best book on Geometry with which we are acquainted."Mechanics' Magazine, No. 1227.

LONGMAN & Co., London.

Sketches of Character, and Other Pieces in Verse.

By ANNA H. POTTS. Small 8vo. pp. 215. Price 4s.

"In these days when so many poetical effusions are mere narcotic drugs, we have much pleasure in alighting upon a work which is certainly entitled to assume a permanent niche in the modern temple of our poetic literature. The poetry is of a high order, breathing the spirit of an elevated morality, a cheerful, trustful religion, and a thorough appreciation of the beauties of the natural world. The accomplished authoress evidently aims at something higher than mere poetry, which, when properly understood and written, is only a means to an end; and that end is the elevation of man, as a religious, moral, and intellectual being."-Glasgow Examiner.

"Poetry in these days to be read and repay the toils of Authorship, must be Poetry. Embued with all the finer feelings of humanity, poetry from the pen of a lady we naturally expect to wear its most attractive and winning forms. In the book before us, we find much of this-just taste, a fine appreciation of the beautiful, and a vigorous but feminine mind, are traceable, in every line of Mrs. Potts' Compositions."-Cambridge Advertiser and University Herald.

"This little volume is a Collection of Poetical Effusions on subjects of universal interest. Many of them are remarkable for their graceful simplicity, and the absence of pretension, while some exhibit no inconsiderable degree of humour. The fair Authoress passes from grave to gay, from lively to severe,' with a refreshing ease, and in many passages displays much feeling on subjects of domestic interest."-Educational Times.

"There are many pleasing poems in this unpretending volume."-Church and State Gazette.

"The Sketches of Character contained in this agreeable volume may be enumerated under the heads, Husbands,' Wives,' and 'Maidens,' which are written in an easy, simple style, delineative and didactic, with some passages of satire; and to these may also be added the shorter Pieces, called 'The Sisters,' and 'The Froud.' The 'Other pieces in Verse,' are numerous and of varied kinds, playful and grave, descriptive or commemorative, sentimental or imaginative, the metrical structure various, but always easy and flowing, with a careful and accurate choice of rhymes. A deep and fervent tone of religious feeling pervades all the Pieces in which sacred thoughts are appropriate, and the moral sentiments are chaste, loving and cheerful, adorned with poetical imagery and pleasing conceptions, which are all the more effective for their simplicity."-Leeds Intelligencer.

"She chiefly aims at developing the proper sphere of her sex, by pointing out the duties of women under the various circumstances in which they are placed, shewing the importance of patience and forbearance, truthfulness and constancy, and a reliance upon the practical influence of religion. These topics are urged in various forms, with clearness and simplicity."-Bentley's Miscellany.

"We have no hesitation in saying that this little volume is fraught with many divine snatches of genuine poetry. The verses are far superior to the poetry of the million with which the pages of our periodicals teem; and which we regard as a monster nuisance that ought to be swept clean away with the broom of the Sanitary Act. In the Sketches of Character' there is a word of advice to each of the three classes, Husbands, Wives, and Maidens. To each class a separate poem of considerable length is devoted, and we can assure our readers, whether they are husbands, wives, or fair maidens, that each and all of them will find a lesson here from which they may derive pure and profitable instruction, inculcated in a playful and yet earnest style. We can truly say that there is not in the volume one verse which the writer will ever regret to have written or the reader to have perused.”— Glasgow Reformer's Gazette.

Simple Poems for National and Sunday-Schools.

By ANNA H. POTTS. 2s. per dozen.

"Mrs. Potts possesses the happy secret of adapting her style to suit the comprehension of childhood, without becoming trivial or common-place, and we trust her work. may meet with the success it so well deserves."-Lady's Newspaper.

Sold at the National Society's Depository, Westminster.