I am a marine store dealer, and all kinds of old metal come into my hands. I buy articles of iron and copper and lead and brass and tin and zinc. I buy old battered silver electro-plate and melt it down for the silver. Silver is not worth the attention of a great chemist like you. But sometimes I come across gold. It may reach my hands in one way or several ways. It may turn up in something I am melting. It may be gilding on old iron I buy. You are not to know all the secrets of my trade as a marine store dealer, which is a highly respectable if not an exalted trade. Now gold, no matter how or where it may be, is worth any man's consideration. The gold that comes my way is never pure. It averages half or little more than half alloy. You are a great chemist. I cannot afford time to separate the gold from the alloy. I cannot spare time to go about and sell it. Every man to his trade; I am a marine-store dealer, you are a great chemist. What will you give me for ingots fifteen carats fine? The value of gold of fifteen carats to sell is two pounds thirteen shillings and a penny. Gold is the only thing that never changes its price. Any one who wants pure gold must give four pounds four shillings and eleven pence halfpenny for it. Fifteen twenty-fourths! The value of fifteen twenty-fourths of that sum is two pounds thirteen and a penny. The alloy counts as dross and fetches nothing---- "Hah! Yes," thought Leigh interrupting his retrospect with a start as he found himself at the door of the restaurant where he proposed dining, "I must have food for the body. Food for the soul, if taken too largely or alone, kills the body, no matter how strong and shapely and lithe it may be. I shall think this matter out when I have eaten. I shall think it out over a cigar and coffee." He ordered a simple meal and ate it slowly, taking great comfort and refreshment out of the rest and meat. He had a little box all to himself. He was in no humour for company, and it was long past the dinner time in this place, so that the room was comparatively deserted. When he had finished eating he ordered coffee and a cigar, and putting his legs up on the seat, rested his elbow on the table, lit his cigar and resumed his cogitations in a more vigorous and vocal manner, using words in his mind now instead of pictures. "Let me see. Where was I? Oh, I recollect. Timmons can't spare time for chemistry or metallurgy and doesn't care to deal with so valuable a metal as gold, even if he had the time. I understand all about metals and chemistry and so on. I entertain the suggestion placed before me and turn it round in my mind to see what I can make of it. I get hold of a superb idea. "Of course, after extracting the metal from the alloy, when I had the virgin gold in my hand I should have to find a market for it, to sell it. The time has not yet come for absolutely forming my figures of time in metal. Wax will do even after I begin the mere drudgery of the modelling.