March came and dragged along more than the due number of weeks of foul weather. Yet with the approach of the vernal equinox I began to overhaul my buckskins. Being well able to imagine the state of the roads, I had started a chest with the bulk of my wardrobe by wagon to Pittsburg ten days in advance, and all my preparations had been made to follow after, when the post from Philadelphia brought me a letter which caused me to change my plans in a twinkling. I should rather have termed the missive a note. It was without date, and ran thus:

"If Dr. Robinson is interested in learning of a project contemplated by two parties whom he met at dinner,--to wit, a certain foreign gentleman and the writer,--he will, on his return West, come by way of Philadelphia, and call upon the writer.

"A. B."

Much as this language smacked of intrigue, I had no hesitancy in changing my route to comply with the note. It was not that I felt any interest in the projects of Colonel Burr or his a.s.sociates. The point was that to my mind "foreign gentleman" spelled "senor," and I had met but one senor at dinner in the company of Aaron Burr. If senor, why not senorita? The rest follows as a matter of course.

My faithful nag had not gone unridden through the winter. A man does not always give over the habit of a daily outing because of b.a.l.l.s and routs and tea-sippings. Yet the roads north might have been better--which is not saying much,--and there are limits to the endurance of a beast, though not to the miriness of a seaboard road in the spring rains. I did not make the trip to Philadelphia in record time.

Upon my arrival I found that even the beast's master would be the better for a night's rest. Directed to the Plow Tavern, I demanded food and drink for man and horse, and having washed and supped, soon found myself pressing the clean linen of my Quaker host.

Business justifies calls at early hours, and I did not breakfast late.

It was as well, perhaps, that I missed my way in the square-laid but narrow Quaker streets, and did not find myself upon the doorstep of Colonel Burr until midmorning. Even as it was, I had a wait of several minutes in the drawing-room before the Colonel entered, wigless, unshaven, and loosely attired in nightgown and slippers.

While waiting, a casual survey of the room had surprised me with its evidences of a lavish establishment. Gossip had reported that the Colonel was not meeting all his extensive indebtednesses when due.

He greeted me with bland cordiality, notwithstanding the inapt hour of my call.

"Welcome, doctor, welcome!" he exclaimed. "Better late than never, eh?"

"You are kind," I replied. "I fancied that I had come too early."

He glanced at his dress with a shrug. "Wine and late hours carry through many a successful conference. You will join me in a cup of coffee and a roll?"

Though I had no wish for food, I a.s.sented, for I saw that he had not yet breakfasted. We were soon seated in a snug little den of a room, sipping as good coffee as I had ever tasted at any other than a creole table.

Few men whom I have met have greater command of their features than has Colonel Burr. On the other hand, few are as over-sanguine. He must have inferred that my speedy response to his note meant outright eagerness to share in the projects at which he had hinted. Scarcely pausing for a few civil inquiries as to mutual acquaintances in the Federal City, he interrupted my answers in the midst.

"Let that wait, let it wait, doctor!" he exclaimed, with an ingratiating smile. "There is something of greater moment to us both. I take it from this personal response to my note that you are not uninterested in the plans of Senor Vallois and myself."

The mention of the senor's name drew from me a sharp nod of a.s.sent. The plans of Senor Vallois could not but concern his niece, and consequently myself. The Colonel nodded back, and his smile deepened.

"You are aware," he began, "that I have contemplated the purchase of a large tract of land beyond the Mississippi, within the Spanish boundary, on a tributary of the Red River."

"The project was mentioned by you at the President's house," I replied.

"But the ulterior purpose of the scheme--"

"It is reported that you have planned for a colony."

"As a move necessary to the advancement of the real project," he explained.

My look of interest was not a.s.sumed. For months past many hundreds of persons, enemies no less than well-wishers of the astute Colonel, had been guessing at the real object behind his rumored schemes.

He nodded shrewdly, and went on, almost in the words of Senator Adair: "Have you considered, doctor, the fortune in store for whoever opens an overland trade with Santa Fe?"

"Granted, sir. No less have I considered the improbability of obtaining such trade concessions from the Spanish authorities. It is only too well known that their policy is set upon jealous exclusion. Their desire for contact with our Western borderers is as slight as their racial and religious aversions are deep-seated and abiding."

"Say rather, their political aversion. Better still, say the political aversion of the authorities alone. I have reason to believe that the people of Mexico would welcome closer relations with us."

"It is not possible!" I protested.

"Have you never thought that the Spanish colonies may be as desirous of achieving independence from foreign oppression as were our own?"

"There is the contemplated expedition of Miranda to Caracas to speak for that," I a.s.sented.

"We have the outcry of our insolent friend the Marquis of Casa Yrujo to testify as to the Spanish view of Miranda. The point is, if an expedition to South America, why not one to Mexico?"

"A conquest?" I inquired--"an extension of the vast westward boundaries of Louisiana Territory? It is true that war with Spain now seems inevitable. There is no doubt that the Government would proceed to hostilities, were it not that the French Minister intimates that the Emperor will not permit the war."

He gave me a cunning look. "Ay! With a Napoleon behind him, General Torreau has no difficulty in intimidating our meek philosopher of the White House. Yet the Emperor is powerless. England's fleets guard the high seas. The time is ripe to strike at Spain. We shall precipitate the war, and to us shall fall the prize! Let our object remain unnamed.

Enough that Senor Vallois speaks for certain fellow haciendados of wealth and influence living in the northern part of New Spain, that portion of the country above the territory of the viceroyalty and under the government of General Salcedo."

"Whom they term the Governor-General of the Internal Provinces?"

The Colonel nodded. "These friends of Senor Vallois are far from content with present conditions. They would gladly throw off the yoke of Spain if the occasion presented itself. My plan is to present the occasion by means of an army of invasion, to be allied with the revolutionary party.

There are thousands of adventurous riflemen west of the Alleghanies not unready to follow an able leader to the land of the Montezumas."

"I have lived on the frontier too long, sir, to doubt that the tide of our westward emigration will roll on until it breaks on the vast desert of the Western plains."

"I care not for the tide, sir! We shall set in motion a wave that will roll across the desert into the golden paradise of El Dorado!"

"And you would tell me a man of Senor Vallois's intelligence invites the entrance of that wave?"

Again the Colonel gave me a knowing smile. "It will be for the Mexicans to care for their own interests when the time comes. Men do not traverse deserts and destroy governments without thought of reward. My fiery friend General Jackson of Tennessee is champing with eagerness to share in the conquest of the Spaniard. Would he be so eager were it explained to him that the object of the invasion went no further than the freeing of the people of that remote land? But there will be glory and recompense for all, and to spare. I have pledged Senor Vallois that he and his friends shall gain a free government, and with it security for their estates. It is his own concern if he and they misconstrue the statement too much in their own favor. On the other hand, Jackson is a man far hungrier for glory than for gold. He will lead our victorious army south into the viceroyalty, to capture the city of Mexico, while we are shaping the new Government for the whole."

The magnitude of the scheme struck me dumb. The Colonel noted the fact with satisfaction. He tapped the table significantly. "That Government, doctor, is already in process of formation. As originator and leader of the project, I claim the supreme office. Certain other of the higher offices are allotted. But you, sir, are a man of scientific attainments and proven courage, and, what is no less important in a royal court, you are a gentleman."

"Royal court?" I muttered, wondering what more might follow.

"The Spanish-American is not qualified to enjoy a republican form of government. Upon this Senor Vallois and myself are clearly agreed. The plan is a const.i.tutional monarchy or empire, with a restricted franchise, the voters to be confined to the ranks of the wealthy and the intellectual."

"In neither of which cla.s.ses will be found the bulk of your invading army. I foresee a revolution to cap your conquest," was my comment.

"Men can be managed," he replied. "There will not be lacking the spoils of office and the plunder of the enemy to lull their discontent. With all their leaders bound to us by self-interest, it will not be difficult to hold the ma.s.s in check. Senor Vallois guarantees a stout auxiliary force of native militia."

"With whom our rough frontiersmen will make short work, in sport, if not in deadly earnest."

"Perhaps,--if brought in contact while not under the fire of the common enemy. Pray do not imagine me so dull, sir. The point has been foreseen, and has been discussed with men of military training. The army of invasion will remain the army of invasion. West of Nuevo Mexico is the remote Pacific province of the Californias; south of the city of Mexico--"

"You think to conquer an empire!" I cried, overwhelmed.

"Why not?" he returned, with an a.s.surance which for the time swept me off my feet in the current of his flashing dreams.

But this giddiness was not alone due to his bare statement. Behind the daring words I had seen what to me was the lure of lures. I had been offered in substance, if not in words, an office of dignity in the court of this future royal personage, among whose lieutenants was numbered the kinsman of Senorita Vallois.

What wonder if for the moment I forgot the worth of republican citizenship in the glittering dream of t.i.tled office? What wonder if in the intoxication of the moment I saw the barrier flung down between myself and her, and thought to barter my birthright as an American for a va.s.sal estate which should bring me within reach of her?