Page 105 - Jack's victory and other stories about dogs

pieces of card arranged in the form of a circle;

that as soon as a question was proposed he moved

round this circle, and that levers, concealed

imd&r the carpet on which he walked, and which

were made to move under his feet by means
of ropes, indicated to him the exact moment

when to stop, and to place his foot on the nearest

card, He was so well trained to touch the card

next to him when lie felt the levers move, and to

give an affirmative or negative answer by the
motion of bis head according as his master or

any confederate altered or lowered the tone of

his voice, that he was never once observed to

commit an error.