Page:Popular Science Monthly Volume 90.djvu/578

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��Popular Science Monthly

���Embankments and obstacles. Reading from left to right, fascines (sticks bound together), gabions (bottomless baskets filled with earth), hurdles and sand-bags

���Fiom lelt to right, sand-bags, sod and plank embankments, military pi' ,. .!),i;s (pointed obstacles), wire entanglements and wire fence with apron on each side

���Samples of trenches, showing simple trench, enlarged trench, trench with' traverse sections, communicating trenches and trenches with individual firing positions

���Rear view of a portion of field fortifications of different kinds made on the sand table

queen post, pontoon, railroad trestle, one train, railroad, water tank and about fifty buildings, as well as glass for representing bodies of water. This set teaches map- reading and contours, and with it it is possible to do work in outposts, scouting and other problems in minor tactics, far more satisfactorily than on the map.

The terrain set contains a section of wire fence, a section of wire loops, a section of high wire entanglement, a section of low wire entanglement, a section of chevaux de frise (spiked obstacle) and a form for fire trench with attachment for enlarging. This set also has the following tools: one surface float, two road markers, two

��Front view of the same. Note abatis, wire entanglements, wire fence and shelter

railroad markers, one leveling roller, one folding rule and one trowel. Work with the terrain set gives the soldier a fair idea of a big military problem and of his personal importance in it. It does not restrict him to the small section of ground he would see while actually engaged in his duty. On the sand table he is enabled to work out his own route in patroling or scouting, and it gives him a far clearer idea of the problems involved as a whole than he could possibh get otherwise. This work has been found to stimulate the private's interest to such an extent that he is gradually fitted for assuming any responsibility which an emergency may thrust upon him.

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