From a document written in 1773, and found among the papers of George Chalmers, Secretary of Trade of Great Britain, we find that at this time there were only thirty-three settlements east of the Mississippi and between Natchez and what is now the state of Louisiana.[26] But from that date the streams of immigration began to flow steadily into this new country. This fact is shown by another contemporary manuscript, which was written by Gov. Chester, shortly after the Spanish conquest of West Florida. In it he says that in 1778, "considering the importance of the Western Parts of the Colony (of West Florida) lying on the River Mississippi which had so far increased in its inhabitants____that since the____last Assembly (held in 1772) it had been divided from the District of Mobile or Charlotte County and erected into Two Districts, viz.: The District of Manschack and the District of Natchez and contained a great number of respectable wealthy Planters and Settlers than either of the other Districts in the Colony" (Mobile and Pensacola).[27]
During the greater part of his first six years' residence near Baton Rouge, Dunbar suffered from a series of misfortunes which well-nigh destroyed all that he could accumulate through his industry and thrift. In 1775, he lost some of his most valuable slaves through a rebellion in which they were implicated. Three years later, his house and plantation were plundered by one Capt. James Willing,[28] who, although a commissioned officer in the continental army was really a freebooter. In speaking of Willing's visitation, Dunbar says, in his private Journal that "the houses of the British gentlemen on the English side were plundered, and among the rest, mine was robbed of everything that could be carried away—all my wearing apparel, bed and table linen; not a shirt was left in the house,—blankets, pieces of cloth, sugar, silverware. In short, all was fish that came in their net____I was plundered of £200 sterling value."[29] The year following, 1779, his plantation was again raided,—this time by marauding bands of soldiers from the Spanish army that subdued the district under their gallant leader, Galvez.
For several years after the last of these misfortunes, Dunbar was left undisturbed in his pursuits; and by constant application to business and the adroit management of the affairs of his firm, he accumulated a competency.
In 1787, he wrote to his partner, Mr. Ross, that the lands at Natchez were far preferable to their lands at Baton Rouge; that the Natchez soil was particularly favorable to the production of tobacco and that there were overseers in that part of the country who would engage to produce from two to three hogsheads to the hand besides provisions. His final settlement was at a place nine miles south of Natchez and four miles east of the Mississippi River. Here he opened the celebrated plantation called "The Forest," where he spent the remainder of his life.
On account of the competition from Kentucky and the Spanish restrictions on trade, he found the cultivation of tobacco unprofitable. He directed his attention to the raising of indigo, but was soon forced to abandon this also, because of the ravages of an insect. He then engaged in the cultivation of cotton, which proved to be a very remunerative crop. We are told that he became "the most extensive and successful planter" in this region, being one of the first to turn the attention of the planters of the Natchez District to the advantages which the cultivation of cotton afforded over other crops. In 1799 he wrote to Mr. Ross of Philadelphia that he continued to cultivate cotton with very great success and that it was by far the most remunerative staple that had been raised in this county.[30] In another letter, written while in the midst of the cotton harvest, he said that he had made "not less than 20,000 pounds of clean cotton worth in London £2,000." He also mentioned that he had helped to improve the method of packing cotton by the introduction of the square bale. In order to perfect this improvement, he requested his correspondent to have a screw press made in Philadelphia according to the specifications which were enclosed.[31] In a subsequent letter written to the same party, Dunbar expressed his surprise that the press should have cost him $1,000, but added that he would try "to indemnify" himself "by extracting an oil from the cotton seed." He requested to be informed what price such an oil would bring in the market, stating that it would probably be classed "between the drying and fat oils, resembling linseed in color and tenacity, but perhaps less drying."[32] Claiborne says that this was "the first suggestion of that product which has now become a great article of commerce, or indeed of utilizing cotton seed at all. At that period it was not dreamed of as a fertilizer, nor fed, in any shape to stock. It was usually burnt or hauled to a strong enclosure, at a remote part of the farm, to decompose, and was considered of no use whatever, and really a nuisance."[33]
These brief extracts, from the correspondence of Dunbar, show that he made a practical application of the scientific principles which he had learned in his native country. No comments are needed to show that he was a man of thought as well as of action.
Dunbar continued his business relations with Mr. Ross until the partnership was dissolved by the death of the latter in 1800. The interest of the heirs of the deceased was then bought by Mr. Dunbar for about $20,000.[34]
The remaining years of his life were devoted almost exclusively to scientific investigations, which he frequently characterized as his "favorite amusements." He seemed to be indifferent to political preferment, and though out of deference to the wishes of his people, he sometimes permitted an interruption of his scientific work in order to perform the duties of the offices which were more than once thrust upon him, such labors were not congenial to him. After the adjournment of the Territorial Legislature in 1803 of which he was a member, he wrote to President Jefferson expressing his delight upon being able to return to his scientific work.[35]
No greater injustice could be done Mr. Dunbar than to infer that his political indifference was due to lack of patriotism. His strong attachment to the home of his adoption is shown in the following extract from a letter to President Jefferson, written January 7, 1803:—"By a letter____from my much esteemed friend, Mrs. Trist,____she says that you had informed her it was my intention to remove shortly from this country; I beg leave to remove this impression. Since the country has been united to the American federation, I have never ceased to consider it as my own country which I hope never to be under the necessity of abandoning."[36] In another letter, written to the same great statesman six months later, Dunbar calls attention to the "renewed activity and immigration of the French to the Mississippi Valley," and expresses a fear of the consequences to follow therefrom. "It is desirable," he adds, "to preserve the whole of the Valley of the Mississippi for the spread of the people of the United States; who might in the progress of a century, plant the fine western valley of the Mississippi with many millions of inhabitants, speaking the same language with ourselves. It ought not to be objected that this object is too remote to merit contemplation of the present moment."[37] He then gives a discussion of the political methods of the French and Spaniards; also his ideas of the reason why the Spaniards had stopped the right of deposit at New Orleans, with circumstances to confirm the same.