"And the wound in the throat?"

Here the examining magistrate readily confirmed the decision of the
doctor that, if the murderer had pressed her throat a few seconds
longer, Mademoiselle Stangerson would have died of strangulation.

"The affair as reported in the 'Matin,'" said Rouletabille eagerly,
"seems to me more and more inexplicable. Can you tell me, Monsieur,
how many openings there are in the pavilion? I mean doors and
windows."

"There are five," replied Monsieur de Marquet, after having coughed
once or twice, but no longer resisting the desire he felt to talk
of the whole of the incredible mystery of the affair he was
investigating. "There are five, of which the door of the vestibule
is the only entrance to the pavilion,--a door always automatically
closed, which cannot be opened, either from the outer or inside,
except with the two special keys which are never out of the
possession of either Daddy Jacques or Monsieur Stangerson.
Mademoiselle Stangerson had no need for one, since Daddy Jacques
lodged in the pavilion and because, during the daytime, she never
left her father. When they, all four, rushed into The Yellow Room,
after breaking open the door of the laboratory, the door in the
vestibule remained closed as usual and, of the two keys for opening
it, Daddy Jacques had one in his pocket, and Monsieur Stangerson
the other. As to the windows of the pavilion, there are four; the
one window of The Yellow Room and those of the laboratory looking
out on to the country; the window in the vestibule looking into
the park."