It opens by pressing a penknife into one of a number of rivets; you can then unscrew it.
"When it was open I discovered that the little vial inside had been broken, and that somehow or other the life-giving fluid had evaporated unperceived.

I had not opened it for a year or more.
"I saw at once that God intended it not to be at _my_ time--that was very clear; and after considerable reflection and a wakeful night, I came to the conclusion that my divine Impulse did not lead me to adopt a course of action, but only to _avoid_ a course--the fact which I developed in my letter to you.

And then came the resolve, tardy and weak at first, but gaining ground, warning me that perhaps it was an inglorious flight; though I knew it was pardonable, I felt as if God might meet me with 'Not wrong, but if you are really bent on the highest, you must do better than this.' It might, I felt, be losing a great opportunity--the opportunity of facing a hopeless situation, a thing I had never done.
"And so I came to the conclusion to fight on, and my reward is coming slowly; contentment seems to return, and Edward is an ever-increasing joy; he fills my life and thoughts.

Oh, if I can only make him good; put him in the way of inward happiness! I break out into prayer and aspirations for him in his presence when I think of the utterly heedless way in which he regards the future, and the awful, the momentous issues it contains.

He, dear lad, thinks nothing of it, except as a sign of my love for him.