of the street," whispered
Darrin. "Merely slow down so that I may slip to the sidewalk. Then go
ahead, waiting for me around the corner two blocks away."

"One block away would be better, Monsieur," urged the chauffeur.

"Make it two," Dave insisted crisply.

Stepping out on the running board, Dave leaned well forward, thus
making it possible to close the door of his car as it slowed down.
Then, as Dave stepped to the sidewalk, the taxicab moved forward more
rapidly.

Searching in an inner pocket, Emil Gortchky, down the street on the
other side, did not look up, and apparently did not observe the
maneuver on the part of Dave's chauffeur. Dave slipped quickly into a
darkened doorway, from which he could watch the international spy with
little danger of being observed.

Taking out a little packet of papers, and moving toward a street lamp,
Gortchky selected one of the papers, thrusting the rest back into his
pocket. As he did so, one white bit fluttered to the sidewalk.

Reading under the street lamp the paper he had selected, Gortchky put
that particular paper in another pocket. Then he turned abruptly,
plunging into the depths of an alley-like street.

Sauntering slowly across the street, in order not to attract too much
attention from other passers on the badly lighted Rue d'Ansin, Ensign
Darrin, his gaze glued to that piece of paper, soon reached it and
picked it up.

"For that scoundrel to drop this paper, of all others that he had in
his pocket!" gasped Dave Darrin, as, under the street light, he took
in its nature.

Then he paled, for this paper seemed to confirm absolutely the young
ensign's suspicion as to the way in which the British battleship was
to be destroyed.

All in a twinkling Dave's pallor vanished, for he had something else
to think about.

On the alley-like side street a quick step was heard that Darrin
recognized. It was that of Emil Gortchky, hastily returning to find
the paper that he had dropped in the heart of Apache Land!

CHAPTER XVI

"SEEING" THE PARIS APACHES

Like a flash Darrin thrust the paper into one of his own pockets. Then
he turned, darting into a near-by doorway dark enough to conceal him
from Gortchky's eyes, if he should look in that direction.

"I've no reason for fearing an encounter with Gortchky, unless he
knows how to summon the murderous Apaches to his aid," Dave told
himself as he pressed back as far as he could into his hiding place.
"I don't