OPINIONS OF THE PRESS.

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"These are decidedly the best works of their kind that have come under our inspection. They will form, when completed, an excellent cyclus of instruction, adapted to the juvenile comprehension. The names of more than one of their authors guarantee the excellency of their compositions. We know that the scientific Catechisms have been submitted to the inspection of authors eminent in their respective departments, and highly approved of by them. We recommend them to the different societies for the promotion of Education."-Edinburgh Literary Journal.

"To.all who mingle more or less in the education of children these small volumes will prove admirable helps. We hope to hear of them forming part of the furniture of every room in Scotland, inhabited either wholly or in part by children from six to fifteen years of age."-Edinburgh Weekly Chronicle.

"We have no hesitation in recommending them as clear, condensed, and interesting summaries, well adapted for the instruction both of the rising generation, and of individuals more advanced in years whose opportunities have not enabled them to lay up a sufficient stock of ideas in early life."-Scotsman.

"Of these works it is enough to say, that they are the very best of the kind that we have yet perused. We know of no similar productions equally adapted for conveying to the youthful mind such a store of useful knowledge with such directness and perspicuity. We recommend them to the attention of the heads of families and the teachers of youth."-Edinburgh Observer.

"Of several of the writers the names speak for themselves; but let any of the Catechisms be compared with works of a similar character, and we hesitate not to say that their superiority will be universally acknowledged."-Edinburgh Evening Post.

"Altogether, these are very useful and instructive elementary compilations, and well fitted to answer the purpose for which they were written. To teachers of youth and the heads of families we can recommend them, as of eminent service in their arduous duty of storing the youthful mind with useful and interesting knowledge."-Glasgow Courier.

"We regard them as cheap and efficient means of inculcating the leading principles of all the various branches of knowledge of which they treat, to all classes of learners.-Indeed, it is rare to find so much useful knowledge comprehended within so narrow a compass; and it is seldom that books, so unassuming in their character, are written in so plain, so pure, and so appropriate a style."-Glasgow Free Press.

"They are much superior to any similar Catechisms we have seen. The names attached to them confer a degree of respectability we have not been accustomed to meet with in such publications."-Aberdeen Observer.

"Not only have these compilations outstripped all competitors in the same track, but they have left nothing to be desired, in the amount of information they profess to communicate, and in their perfect adaptation to the youthful capacities it is their object to awaken and instruct.-No parent, who has himself received an ordinary education, can fail, with these little works in his hand, aided by moderate exertion and perseverance, to make his juvenile family masters of their contents."-Greenock Advertiser.

"Whether we regard their subjects, or the manner in which these subjects are treated, we conceive them entitled to our highest approbation. Indeed, we have been astonished at the extent of the information which most of them contain upon their respective subjects; and we venture to affirm, that an equal quantity of interesting and accurate information is nowhere to be found upon any subject in the same compass and for the same price. We know that the above Catechisms have been introduced into several schools, and uniformly with the greatest success."-Perthshire Advertiser.

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OLIVER & BOYD'S CATECHISMS.

"Messrs Oliver & Boyd, of Edinburgh, are at present issuing a series of cheap Catechisms. We have, in common with most of our contemporaries, been surprised at the quantity of sound practical information and general knowledge comprised in each."-Inverness Courier.

"We have seen no system of catechetical instruction at all to be compared with that embodied in these little volumes. To heads of families in the middle and lower ranks of society, and to tutors and schoolmasters generally, we consider them almost invaluable, as a simple, easy, and beneficial mode of communicating sound knowledge to the youthful mind."-Dumfries Weekly Journal.

"We have seldom seen so much valuable matter brought before the view in a mode so compact and luminous."-Dublin Christian Examiner.

"Pinnock's Catechisms were deservedly admired as elementary assistants to education; but they are greatly improved on by those of Oliver & Boyd, now offered to the public. The knowledge they impart is, in many respects, not less valuable to the adult and educated than to the juvenile student. They embrace, and render plain, difficulties too often overlooked in the ordinary modes of school instruction, and are also eminently calculated to fix on the memory the most important points of the several subjects upon which they treat."-Dublin Warder.

Recent Notices of the Catechisms of Botany, and of Natural Philosophy, Part I.

These are admirable initiatory compilations, which teach a young mind much, without terrifying it in the outset with too formidable a prospect."Asiatic Journal.

"They are written with that conciseness and perspicuity which ensure their being comprehended, and to convey to the reader knowledge and improvement in every line."-Royal Lady's Magazine.

"These two Catechisms appear to be valuable little works; the arrangement judicious, the facts striking, the style clear and popular."-Spectator.

"They are deserving of express notice, not only on account of the judicious selection of the questions and the clearness of the answers, but because of the very numerous illustrations, which, compared with the price of the book, appear out of all payable proportion."-Atlas.

"We consider them as well calculated to facilitate the acquisition of an accurate and comprehensive acquaintance with the history of the vegetable kingdom, and the general doctrines of natural philosophy."- Sheffield Iris.

"They cannot but simplify the business of education; for while they assist the tutor, they will instruct alike the young and old, and, in relieving the mind from the irksome idea of drudgery, impart a charm such as in the course of tuition was previously unknown to the scholar."-Exeter Flying Post.

"They are really excellent little books, and will be found of singular utility. Young persons will learn as much from them in an hour as they would do in a week from more imposing treatises."-Scotsman.

"These little works are very happily adapted for imparting instruction to the youthful mind. They comprise a great amount of elementary knowledge in a comparatively small space, and are particularly well fitted for the use of schools."-Edinburgh Observer.

"These little books contain a very considerable fund of information, expressed in simple and intelligible language, and possess, what has hitherto been much neglected in treatises of their kind, a very useful supply of explanatory wood-cuts."-Dublin University Magazine.