Now for it; that's our ground.

We'll soon come upon their track now." We pressed rapidly forward, passing an infantry party as we went.

The blue light was scarcely a hundred yards off; we could even hear the shouting of the officers to their men in the trenches, when suddenly my horse came down upon his head, and rolling over, crushed me to the earth.
"Not hurt, my boy," cried I, in a subdued tone, as Hampden jumped down beside me.
It was the angle of a trench I had fallen into; and though both my horse and myself felt stunned for the moment, we rallied the next minute.
"Here is the very spot," said I."Now, Mike, catch the bridles and follow us closely." Guiding ourselves along the edge of the trench, we crept stealthily forward; the only watch-fire near was where the engineer party was halted, and our object was to get outside of this.
"My turn this time," said Hampden, as he tripped suddenly, and fell head foremost upon the grass.
As I assisted him to rise, something caught my ankle, and on stooping I found it was a cord pegged fast into the ground, and lying only a few inches above it.
"Now, steady! See here; this is their working line.

Pass your hand along it there, and let us follow it out." While Hampden accordingly crept along on one side, I tracked the cord upon the other.

Here I found it terminating upon a small mound, where probably some battery was to be erected.