Let a veil be drawn over the self-committals into which the Uncommercial Traveller would have been betrayed but for a discreet reticence, coupled with an air of absolute wisdom on the part of that artful personage. Take the square of five, multiply it by fifteen, divide it by three, deduct eight from it, add four dozen to it, give me the result in pence, and tell me how many eggs I could get for it at three farthings apiece. The problem is hardly stated, when a dozen small boys pour out answers. Some wide, some very nearly right, some worked as far as they go with such accuracy, as at once to show what link of the chain has been dropped in the hurry. For the moment, none are quite right; but behold a labouring spirit beating the buttons on its corporeal waistcoat, in a process of internal calculation, and knitting an accidental bump on its corporeal forehead in a concentration of mental arithmetic! It is my honourable friend (if he will allow me to call him so) the fifer. With right arm eagerly extended in token of being inspired with an answer, and with right leg foremost, the fifer solves the mystery: then recalls both arm and leg, and with bump in ambush awaits the next poser. Take the square of three, multiply it by seven, divide it by four, add fifty to it, take thirteen from it, multiply it by two, double it, give me the result in pence, and say how many halfpence. Wise as the serpent is the four feet of performer on the nearest approach to that instrument, whose right arm instantly appears, and quenches this arithmetical fire. Tell me something about Great Britain, tell me something about its principal productions, tell me something about its ports, tell me something about its seas and rivers, tell me something about coal, iron, cotton, timber, tin, and turpentine. The hollow square bristles with extended right arms; but ever faithful to fact is the fifer, ever wise as the serpent is the performer on that instrument, ever prominently buoyant and brilliant are all members of the band. I observe the player of the cymbals to dash at a sounding answer now and then rather than not cut in at all; but I take that to be in the way of his instrument. All these questions, and many such, are put on the spur of the moment, and by one who has never examined these boys. The Uncommercial, invited to add another, falteringly demands how many birthdays a man born on the twenty-ninth of February will have had on completing his fiftieth year? A general perception of trap and pitfall instantly arises, and the fifer is seen to retire behind the corduroys of his next neighbours, as perceiving special necessity for collecting himself and communing with his mind. Meanwhile, the wisdom of the serpent suggests that the man will have had only one birthday in all that time, for how can any man have more than one, seeing that he is born once and dies once? The blushing Uncommercial stands corrected, and amends the formula.