Still a different sort of business humbug, again, was a wonderful story which went the rounds about fifteen years ago, and which was cooked up to help some one or other of the various enterprises for new routes by Central America to California. This story started, I believe, in the "New Orleans Courier." It was, that a French Doctor of Vera Paz in Guatemala, while making a canal from his estate to the sea, discovered, away up at the very furthest extremity of the Gulf of Honduras, a vast ancient canal, two hundred and forty feet wide, seventy feet deep, and walled in on both sides with gigantic masses of rough cut stone. The Doctor at once gave up his own trifling modern excavation, and plunged into an explanation of this vast ancient one, as zealously as if he were probing after some uncertain bullet in a poor fellow's leg. The monstrous canal carried him in a straight line up the country, to the south-westward. Some twenty miles or so inland it plunged under a _volcano!_ But see what a French doctor is made of! Cutting down the great, old trees that obstructed the entrance, and procuring a canoe with a crew of Indians, in he went. The canal became a prodigious tunnel, of the same width and depth of water, and vaulted three hundred and thirty five feet high in the living rock. Nothing is said about the bowels of the volcano, so that we must conclude either that such affairs are not planted so deep as is supposed, or that the fire-pot of the concern was shoved one side or bridged over by the canallers, or that the Frenchman had some remarkably good style of Fire Annihilator, or else that there is some mistake! Eighteen hours of incessant travel brought our intrepid M.D. safe through to the Pacific Ocean; during which time, if the maps of that country are of any authority, he passed under quite a number of mountains and rivers. The trip was not dark at all, as shafts were sunk every little way, which lighted up the interior quite well, and then the volcano gave--or ought to have given--some light inside. Indeed, if the doctor had only thought of it, I presume he would have noticed double rows of street gas lamps on each side of the canal! The exclusive right to use this excellent transit route has not, to my knowledge, been secured to anybody yet. It will be observed that ships as large as the Great Eastern could easily pass each other in this canal, which renders it a sure thing for any other vessel unless that shrewd and grasping fellow the Emperor Louis Napoleon, has got hold of this canal and is keeping it dark for some still darker purposes of his own--as for instance to run his puppet Maximilian into for refuge, when he is run out of Mexico--it is therefore still in the market. And my publication of the facts effectually disposes of the Emperor's plan of secrecy, of course. IV. MONEY MANIAS. CHAPTER XXIV. THE PETROLEUM HUMBUG.--THE NEW YORK AND RANGOON PETROLEUM COMPANY.