In the first place, her lungs were not strong.

In the second place, there was a gentleman somewhere who had not behaved very well to her.

In the third place, she had not anything particular to do.

These three nots together are enough to make a lady very ill indeed.

Of course she could not help the first cause; but if the other two causes had not existed, that would have been of little consequence; she would only have to be a little careful.