He suggests that the mules shall be clad in submarine armor and made to walk under water along the bottom of the canal, being fed with air through a pump.

As we have never seen a mule in action while decorated with submarine armor, we are unable to say with positiveness what his conduct would be under such circumstances.

But the objections to the plan are of a formidable character.

The mule would, of course, be wholly excluded from every opportunity to view the scenery upon the route, and we fear that this would have a tendency to discourage him.

Being under water, too, he might be tempted to stop frequently for the purpose of nibbling at the catfish encountered by him, and this would distract his attention from his work.