All 3 Uses of
ascertain
in
The Phantom of the Opera
- At last, they became tired of waiting and opened the envelope, after ascertaining that the seals had not been broken.†
Chpt 16 *
- Immediately after the artist's disappearance, which was procured by means which we have still to ascertain, he flung into his carriage, which drove right across Paris at a furious pace.†
Chpt 18
- I had occasion to go to the dressing-room and, remembering the lessons he had once given me, I had no difficulty in discovering the trick that made the wall with the mirror swing round and I ascertained the means of hollow bricks and so on—by which he made his voice carry to Christine as though she heard it close beside her.†
Chpt 21
Definition:
find out, learn, or determine with certainty -- usually by making an effort