No treasure yarn is the real thing unless it glitters with ducats, ingots, and pieces of eight, which means that in the brave days when riches were quickest won with cutlass, boarding pike, and carronade, it was Spain that furnished the best hunting afloat. For three centuries her galleons and treasure fleets were harried and despoiled of wealth that staggers the imagination, and their wreckage littered every ocean. English sea rovers captured many millions of gold and silver, and pirates took their fat shares in the West Indies, along the coasts of America from the Spanish Main to Lima and Panama, and across the Pacific to Manila. And to-day, the quests of the treasure seekers are mostly inspired by hopes of finding some of the vanished wealth of Spain that was hidden or sunk in the age of the Conquistadores and the Viceroys.

Of all the argosies of Spain, the richest were those plate fleets which each year carried to Cadiz and Seville the cargoes of bullion from the mines of Peru, and Mexico, and the greatest treasure ever lost since the world began was that which filled the holds of the fleet of galleons that sailed from Cartagena, Porto Bello, and Vera Cruz in the year 1702. What distinguishes this treasure story from all others is that it is not befogged in legend and confused by mystery and uncertainty. And while ships' companies are roaming the Seven Seas to find what small pickings the pirates and buccaneers may have lifted in their time, the most marvelous Spanish treasure of them all is no farther away than a harbor on the other side of the Atlantic.

At the bottom of Vigo Bay, on the coast of Spain, lies that fleet of galleons and one hundred millions of dollars in gold ingots and silver bars. This estimate is smaller than the documentary evidence vouches for. In fact, twenty-eight million pounds sterling is the accepted amount, but one hundred million dollars has a sufficiently large and impressive sound, and it is wise to be conservative to the verge of caution in dealing with lost treasure which has been made so much more the theme of fiction than a question of veracity. After escaping the perils of buccaneer and privateer and frigate, this treasure fleet went down in a home port, amid smoke and flame and the thunder of guns manned by English and Dutch tars under that doughty admiral of Queen Anne, Sir George Rooke. It was the deadliest blow ever dealt the mighty commerce of Spain during those centuries when her ruthless grasp was squeezing the New World of its riches.

There, indeed, is the prize for the treasure seeker of to-day who dreams of doubloons and pieces of eight. Nor could pirate hoard have a more blood-stained, adventurous history than these millions upon millions, lapped by the tides of Vigo Bay, which were won by the sword and lost in battle. During these last two hundred years many efforts have been made to recover the freightage of this fleet, but the bulk of the treasure is still untouched, and it awaits the man with the cash and the ingenuity to evolve the right salvage equipment. At work now in Vigo Bay is the latest of these explorers, an Italian, Pino by name, inventor of a submarine boat, a system of raising wreck, and a wonderful machine called a hydroscope for seeing and working at the bottom of the sea.

With Pino it is a business affair operated by means of a concession from the Spanish government, but he is something more than an inventor. He is a poet, he has the artistic temperament, and when he talks of his plans it is in words like these:

"I have found means to disclose to human eyes the things hidden in the being of the furious waves of the infinite ocean, and how to recover them. Mine is the simple key with which to open to man the mysterious virgin temples of the nymphs and sirens who, by their sweet singing, draw men to see and to take their endless treasures."

This interesting Pino is no dreamer, however, and he has enlisted ample capital with which to build costly machinery and charter yachts and steamers. With him is associated Carlo L. Iberti, and there is an ideal pattern of a treasure seeker for you, a man of immense enthusiasm, of indefatigable industry, dreaming, thinking, living in the story of the galleons of Vigo Bay. It was he who secured the concession from Madrid, it was he who as he says, "was flying from province to province, from country to country, from archives to archives, from library to library, ever studying, copying, and acquiring all documents relating to Vigo. I had made up my mind to find out all that was to be known about the treasure. And I believe I have succeeded."

Never was there such a prospectus as Iberti wrote to awaken the interest of investors in the undertaking of Pino. It was a historical work bristling with data, authorities, references, from French, Spanish, and English sources. It was convincing, final, positively superb. One blinked at reading it, as if dazzled by the sight of mountains of gold, and moreover every word of it was true. As a text for this narrative, his summary, the peroration, so to speak, fairly hits one between the eyes:

"As the total quantity of treasure which arrived at Vigo in 1702 amounted to 126,470,600 pesos, or £27,493,609, there is not the least doubt that the treasure in gold and silver still lying in the galleons of Vigo Bay amounts to as much as 113,396,085 pieces of eight, or £24,651,323, after deducting the treasure unloaded before the battle, the booty taken by the victors, and that recovered by explorers. That would have been the value of the treasure two hundred years ago. To-day, its value would be greater, at a moderate estimate of £28,000,000. Such is the sum which we who are interested in the recovery of the treasure have set our hearts on winning from the sea."