stopped the conversation.  It came into sight, the bandsmen with torches in their headgear, and, after it, surrounded and accompanied by all the small boys and shop-girls in the town, came the Royals, in heavy marching order.  The friends stood in a shop doorway until the crowd passed by, and then, just as soon as a voice could be distinctly heard, the schoolmaster clapped his companion on the shoulder and cried, “Eureka!” Coristine thought the music had been too much for his usually staid and deliberate friend.  “Well, old Archimedes, and what is it you’ve found?  Not any new geometrical problems, I hope.”  “Listen to me,” said the dominie, in a tone of accustomed authority, and the lawyer listened.

“You’ve heard Napoleon or somebody else say that every soldier of France carries a marshal’s baton in his knapsack?”

“Never heard the gentleman in my life, and don’t believe it, either.”

“Well, well, never mind about that; but I got my idea out of a knapsack.”

“Now, what’s the use of your saying that, when its myself knows that you haven’t got such a thing to bless yourself with?”

“I got it out of a soldier’s—­a volunteer’s knapsack, man.”

“O, you thief of the world!  And where have you got it hid away?”

“In my head.”

“O rubbish and nonsense—­a knapsack in your head!”

“No, but the idea.”

“And where’s the knapsack?”

“On the grenadier’s back.”

“Then the grenadier has the knapsack, and you the idea:  I thought you said the idea was in the knapsack.”

“So it was; but I took it out, don’t you see?  My idea is the idea of a knapsack on a man’s back—­on two men’s backs—­on your back and on mine.”

“With a marshal’s baton inside?”

“No; with an extra flannel shirt inside—­and some socks, and a flask, and some little book to read by the way; that’s what I want.”

“It’ll be mortal heavy and hot this boiling weather.”

“Not a bit.  You can make one out of cardboard and patent cloth, just as light as a feather, and costing you next to nothing.”

“And where will you be going with your knapsack?  Will it be parading through the streets with the volunteers you would be after?”

“Go?  We will go on a pedestrian tour through the finest scenery available.”  This was said correctly and with great dignity.  It had the effect of sobering the incredulous Coristine, who said:  “I tell ye, Farquhar, my boy, that’s a fine idea of yours, barring the heat; but I suppose we can rest where we like and go when we like, and, if the knapsacks get to be a nuisance, express ’em through, C.O.D.  Well, I’ll sleep over it, and let you know to-morrow when I can get away.”  So the pair separated, to retire for the night and dream a knapsack nightmare.