In the real review many personal touches of relation of Добролюбова affected to child's literature. Foremost is an exceptional seriousness. Child's book for him is a mighty instrument of forming of personality of child, that at the clumsy use can appear harmful. Therefore in the selection of her for Добролюбова there are not little things: dignities of maintenance, exposition, registration, accordance of book to age, even to character and "external", т. of е. to social position of child is all must be taken into account. A main requirement is an utility of book for mental and moral development of child. Books containing primary information about the world, to be useful, must reflect modern scientific presentations and expose basic, but not second-rate properties of object.