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ranged according to the method pursued in the First Lessons; the second part consists of a few questions, with the solution of them, and such copious illustrations of the principles involved in the examples in the first part of the work, that the whole is rendered perfectly intelligible. The two parts are designed to be studied together. The answers to the questions in the first part are given in a Key, which is published separately for the use of instructers. If the scholar find any sum difficult, he must turn to the principles and illustrations, given in the second part, and these will furnish all the assistance that is needed.
The design of this arrangement is to make the scho lar understand his subject thoroughly, instead of per forming his sums by rule.
The First Lessons contain only examples of numbers so small, that they can be solved without the use of a slate. The Sequel commences with small and simple combinations, and proceeds gradually to the more exten sive and varied, and the scholar will rarely have occasion for a principle in arithmetic, which is not fully illustrated in this work.
Colburn's Introduction to Algebra.
THOSE who are competent to decide on the merits of this work, consider it equal, at least, to either of the others composed by the same author.
The publishers cannot desire that it should have a higher commendation. The science of Algebra is so much simplified, that children may proceed with ease and advantage to the study of it, as soon as they have finished the preceding treatises on arithmetic. The same method is pursued in this as in the author's other works; every thing is made plain as he proceeds with his subject.
The uses which are performed by this science, give it a high claim to more general attention. Few of the