align="left">Set of Six Triangles

45 20. Set of Six Polygons 46 21. Set of Six Irregular Figures 46 22. Set of Four Blanks and Two Irregular Figures 47 23. Frame to hold Geometrical Insets 48 24. Child Touching the Insets 49 25. Series of Cards with Geometrical Forms 54 26. Sound Boxes 55 27. Musical Bells 60 28. Sloping Boards to Display Set of Metal Insets 90 29. Single Sandpaper Letter 90 30. Groups of Sandpaper Letters 91 31. Box of Movable Letters 94 32. The Musical Staff 98 33. Didactic Material for Musical Reading 100 34. Didactic Material for Musical Reading 100 35. Didactic Material for Musical Reading 100 36. Didactic Material for Musical Reading 101 37. Didactic Material for Musical Reading 101 38. Didactic Material for Musical Reading 101 39. Dumb Keyboard 102 40. Diagram Illustrating Use of Numerical Rods 107 41. Counting Boxes 110 42. Arithmetic Frame 110

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Recent years have seen a remarkable improvement in the conditions of child life. In all civilized countries, but especially in England, statistics show a decrease in infant mortality.

Related to this decrease in mortality a corresponding improvement is to be seen in the physical development of children; they are physically finer and more vigorous. It has been the diffusion,