The author was evidently a straight Democrat.

Seven years ago I copied this oration with the intention of reprinting it, with a brief historical introduction, supposing I could readily find the few facts I needed. But in this I was disappointed. Who was Dr. George Buchanan? That he was a member of the American Philosophical Society at Philadelphia was apparent on the title page; but that was all I could learn of him from books or inquiry. I then wrote to a historical friend in Baltimore to make inquiry for me there, and I received letters from the author's son, McKean Buchanan, senior paymaster in the United Stares navy, since deceased, and from two grandsons, Mr. George B. Coale and Dr. Wm. Edw. Coale, giving full particulars, which I will condense:

Dr. George Buchanan was born on an estate, five miles from Baltimore, September 19, 1763, and for many years was a practicing physician in Baltimore. He was a son of Andrew Buchanan, who was also born in Maryland, and was General in the Continental troops of Maryland during the Revolution, and was one of the Commissioners who located the city of Baltimore. Dr. George Buchanan studied medicine and took a degree at Philadelphia. He then went to Europe and studied medicine at Edinburgh, and later at Paris, taking degrees at both places. Returning to Baltimore, he married Letitia, daughter of the Hon. Thomas McKean, an eminent jurist, who was a member of the Continental Congress, one of the Signers the Declaration of Independence, and was Governor of Pennsylvania from 1799 to 1806. In 1806, Dr. Buchanan removed to Philadelphia, and died the next year of yellow fever, in the discharge of his official duties as Lazaretto physician. His eldest son was Paymaster McKean Buchanan, before mentioned. His youngest son was Franklin Buchanan, captain in the United States navy till he resigned, April 19, 1861, and went into the so-called Confederate navy. He was, with the rank of Admiral, in command of the iron-clad "Merrimac," and was wounded in the conflict of that vessel with the monitor "Ericsson," at Hampton Roads, March 9, 1862, and was later captured by Admiral Farragut in Mobile harbor.

"My brother," writes one of the grandsons, "told me that the last time he saw Henry Clay, Mr. Clay took his hand in both of his and said, with great emphasis: 'It is to your grandfather that I owe my present position with regard to slavery. It was he who first pointed out to me the curse it entailed on the white man, and the manifold evils it brings with it.'"

In determining how far the sentiments contained in this oration were the current opinions of the time, it became necessary for me to know something definite of the "Maryland Society for the Abolition of Slavery," of the Virginia, the Pennsylvania, and other societies, which existed at that time. This information I could not obtain from anti-slavery books, or from the most prominent abolitionists whom I consulted. The matter seemed to have been forgotten, and it was the common idea that there was nothing worth remembering of the anti-slavery movement before 1830, when Mr. Garrison and his radical friends came upon the stage in Boston. For the want of the facts I needed, I laid aside the idea of reproducing the tract. The subject was brought again to mind by hearing the excellent paper, by Mr. S. E. Wright, our secretary, on the anti-slavery labors of Benjamin Lundy, which he read to this Club, a few months ago. The labors of Mr. Lundy began in 1816, and ended with his death in 1839. Quite recently I have obtained much of the information I needed.

Among the unknown facts to which I could get no clue at the time I have mentioned, were the names of the "Virginia Calculator" and the "Physician of New Orleans," whom Dr. Buchanan mentions with Phillis Wheatley, Ignatius Sancho, and Banneker, the Maryland astronomer, as being negroes who were distinguished for their literary and mathematical acquirements. Mr. Phillips had never heard of them, and he took the trouble to make inquiries among his anti-slavery friends, but without success.

A year or more after I had abandoned my little project, in looking over the files of the Columbian Centinal, printed in Boston, for 1790, I found under the date of December 29th, in the column of deaths, the following:

"Died—Negro Tom, the famous African calculator, aged 80 years. He was the property of Mrs. Elizabeth Cox, of Alexandria. Tom was a very black man. He was brought to this country at the age of fourteen, and was sold as a slave with many of his unfortunate countrymen. This man was a prodigy. Though he could neither read nor write, he had perfectly acquired the use of enumeration. He could give the number of months, days, weeks, hours, and seconds, for any period of time that a person chose to mention, allowing in his calculations for all the leap years that happened in the time. He would give the number of poles, yards, feet, inches, and barley-corns in a given distance—say, the diameter of the earth's orbit—and in every calculation he would produce the true answer in less time than ninety-nine out of a hundred men would take with their pens. And what was, perhaps, more extraordinary, though interrupted in the progress of his calculations, and engaged in discourse upon any other subject, his operations were not thereby in the least deranged; he would go on where he left off, and could give any and all of the stages through which the calculation had passed.

"Thus died Negro Tom, this untaught arithmetician, this untutored scholar. Had his opportunities of improvement been equal to those of thousands of his fellow-men, neither the Royal Society of London, the Academy of Science at Paris, nor even a Newton himself need have been ashamed to acknowledge him a brother in science."

This obituary was doubtless extracted from a Southern newspaper. A fact once found is easily found again. I have come across the name of this unlettered negro prodigy many times since, with the substance of the facts already stated. In a letter which Dr. Benj. Rush, of Philadelphia, addressed to a gentleman in Manchester, England, he says that, hearing of the astonishing powers of Negro Tom, he, in company with other gentlemen passing through Virginia, sent for him. A gentleman of the company asked Tom how many seconds a man of seventy years, some odd months, weeks, and days had lived. He told the exact number in a minute and a half. The gentleman took a pen, and having made the calculation by figures, told the negro that he must be mistaken, as the number was too great. "'Top, massa," said the negro "you hab left out de leap years." On including the leap years in the calculation, the number given by the negro was found to be correct.[4]

That Dr. Buchanan did not mention his name is explained by the fact that he died only six months before; and the audience, who had doubtless read the obituary notice just recited, or a similar one, knew who was meant. Besides, he was a native African, and had no name worth having. He was only Negro Tom. In Bishop Grégoire's work, however, he is ennobled by the by the name of Thomas Fuller, and in Mr. Needles' Memoir the name of Thomas Tuller.[5]