And this because of my fatal failing for digression. I had proposed to write a chapter on Pickford’s vans, and another on Public Executions; but here’s the end of my letter, and I am still standing with one foot on the kerbstone and the other in the kennel.

*  *  *  *  *

As I was writing that last sentence, I felt I could bear it no longer. It had rung in my ears all day. I had looked out of windows, and out of doors, and upstairs, and downstairs, but I could not discover whence it came.

“I can’t get on! I can’t get on!”

’Twas a little plaintive voice like a child’s.

“I can’t get on!” This time I traced it to its source. ’Twas nothing but a little squirrel in a revolving cage. As he ran, so his prison turned, and he still kept crying, “I can’t get on!”

Oh! great principle of Liberty! was I wrong to make the instant determination to set that poor little captive free? My heart assures me I was not. I fumbled at the wire-fastening. It resisted my efforts; but the squirrel bit my fingers all the same.

*  *  *  *  *

Another digression. But it shall be the last. I have sworn it, and so there’s an end of the matter. And ’tis no much matter either, for after all ’tis no more than this:—

As I stood on the pavement at the bottom of Ludgate-hill, with one foot on the kerb and the other in the kennel, I suddenly remembered that it was Lord Mayors Day.