5Q^ 



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. 



