A second interesting phase of the transition period was the method adopted for the training of the senses. From the days of Comenius till now the importance of this has held its place firmly, but the means have greatly changed. Pestalozzi's object-lesson was adopted by Wilderspin and thoroughly sterilised; many teachers still remember the lessons on the orange, leather, camphor, paper, sugar, in which the teacher's senses were trained, for only she came in contact with the object, and the children from their galleries answered questions on an object remote from most of their senses, and only dimly visible to their eyes. Similar lessons were given after 1870 on Froebel's gift II. in which the ball, cylinder and cube were treated in the same manner: progress was slow, but sometimes the children followed nature's promptings and played with their specimens; this was followed by books of "gift-plays," where organised play took the place of organised observation. About 1890 or thereabouts the Nature Study movement swept over the schools, and "nature specimens" then became the material for sense training: as far as possible each child had a specimen, and by the minute examination of these, stimulated their senses and stifled their appreciation of all that was beautiful. Question and answer still dominated the activity; the poor little withered snowdrop took the place of the dead camphor or leather. But underlying all the paralysing organisation the truth was slowly growing, and the children were being brought nearer to real things. A third phase in this transition period is that known as "correlation"; most teachers remember the elaborate programmes of work that drove them to extremes in finding "connections." The following, taken from a reputable book of the time, will exemplify the principle: A WEEK'S PROGRAMME Object Lesson The Horse. Phonetics The Foal, _oa_ sound. Number Problems on the work of horses. Story The Bell of Atri [story of a horse ringing a bell]. Song Busy Blacksmith [shoeing a horse]. Game The Blacksmith's Shop. Reading On the Horse. Poetry Kindness to Animals. Paper Cutting The Bell of Atri. Paper Folding A Trough. Free-arm Drawing A Horseshoe. Clay Modelling A Carrot for the Horse. Brushwork A Turnip for the Horse. Brown Paper Drawing A Stable. Underneath it all the truth was growing, namely, the need of making associations and so unifying the children's lines. But the process of finding the truth was slow and cumbersome.