He knew that he must awaken no one but Josiah.
After a moment's thought he went along the side of the house to the small garden behind it where Josiah grew the melons no one else could grow, and which he delighted to take to Miss Leila or Mrs.Penhallow.In the novel the heroes threw pebbles at the window to call up fair damsels.

John grinned; he might break a pane, but the noise--He was needlessly cautious.

Josiah had built a trellis against the back of the house for grapevines which had not prospered.

John began to climb up it with care and easily got within reach of the second-storey window.

He tapped sharply on the glass, but getting no reply hesitated a moment.