forget them: but they stay there in spite of us, and are pure _depositions_, settlings, or sediments, with or without our concurrence, from the stream of our daily experience.--Returning from this long excursus on arbitrary taxations of the memory suggested to us by the mention of '_Propria quae maribus_,' which the Experimentalist objects to as disgusting to children before they have had experience of the cases in which it furnishes assistance (but which we have objected to as in any case barren of all power to assist), we resume the course of our analysis. We left the Experimentalist insisting on the benefit of directing the studies of children into such channels as that the practical _uses_ of their labours may become apprehensible to themselves--as the first mode of producing a love of knowledge. In some cases he admits that the pupil must pass through 'dark defiles,' confiding blindly in his tutor's 'assurance that he will at last emerge into light:' but still contends that in many cases it is possible, and where possible--right, that he should 'catch a glimpse of the promised land.' Thus, for example, to construe the language he is learning--is an act of 'some respectability in his eyes' and its uses apparent: meantime the uses of the grammar are not so apparent until experience has brought him acquainted with the real cases to which it applies. On this account,--without laying aside the grammar, let him be advanced to the dignity of actual translation upon the very _minimum_ of grammatical knowledge which will admit of it. Again, in arithmetic, it is the received practice to commence with 'abstract numbers:' but, instead of risking injury to the child's intellect and to his temper by thus calling upon him to add together 'long rows of figures' to which no meaning is attached, he is taught 'to calculate all the various little problems which may be constructed respecting his tops and marbles, their price, and their comparative value.' Here the Experimentalist turns aside for about a page (from 'while,' p. 101--to 'practicable,' p. 102) to 'acknowledge his obligations to what is called Mental Arithmetic--that is, calculation without the employment of written symbols.' Jedediah Buxton's preternatural powers in this way have been long published to the world, and may now be found recorded in Encyclopaedias: the Experimentalist refers also to the more recent cases of Porson and the American youth Zerah Colborn: amongst his own pupils it appears (p. 54) that this exercise is practised in the morning twilight, which for any other study would not furnish sufficient light: he does not pretend to any very splendid marvels: but the following facts, previously recited at pp. 16 and 17, he thinks may astonish 'those who have not estimated the combined power of youth, ardour, and practice.' The lower classes calculate, purely by the mind without any help from pen or pencil, questions respecting