"Yes," said Jonas, "and you can keep it a secret until it is done, and then take your father and mother down to see it, and surprise them." "Yes," said Rollo, clapping his hands, "so I will." [Illustration] ROLLO BOOKS. BY JACOB ABBOTT. _Rollo at Work_, _Rollo at School_, _Rollo at Play_, _Rollo's Vacation_, _Rollo Learning to Read_, _Rollo Learning to Talk_. BOUND IN UNIFORM STYLE. The publishers request the attention of the friends of the young to this popular series of books, which have been pronounced, by competent and judicious persons, the best works for children published, not even excepting the best English writers. Mr. Abbott's style is peculiarly interesting to children, being natural and simple, and portraying the trials and temptations of childhood, just as they occur in every day life, and giving them clear and distinct ideas of the right and wrong in their actions. _From the Christian Examiner._ As a whole, they make the most important series of juvenile books that have appeared, to our knowledge, since Miss Edgeworth. They are very unlike those, and yet they resemble them in some prominent features; especially in making it their chief object to be _pleasing_, and thus gently and imperceptibly opening a way for _instruction_ to the mind and morals, without obtruding or forcing it in the least. For this the books before us are remarkable. They are entertaining throughout. The interest never flags, and yet there is no seeming attempt to sustain it. There is little continuous story, and no plot or romance, or grown-up folly, such as fills half of the _young_ novels now made for children. Here is a little boy, who is first induced to learn to _talk_; and in order to do this, he is made to see objects for himself, and think about them, and ask questions. Next he is taught to _read_; to effect this, he is candidly told that learning to read is not play, but work, and at first dry and hard work. It soon becomes easy, however, because it is undertaken in earnest, and then it becomes pleasant; and parents may take a hint from this, when they are afraid to allow letters and learning to wear any form but that of playthings and pastime to their children. In the third volume, Rollo is at _work_; in the fourth, at _play_; and the morals of both play and work are as easily and pleasantly insinuated as we have often seen. There is constant occupation in both, and constant natural opportunities of learning the duty and the advantage of feeling and doing right, and thus seeing the evil of feeling and doing wrong; for Mr. Abbott fully carries out, in these books, the great principle which we rejoice to see advanced in the Preface to one of them, namely, "that it is generally better, in dealing with children, to allure them to what is right by agreeable pictures of it, than to attempt to drive them to it by repulsive delineations of