tch writer. He got out an
edition of the _Elements of Euclid_ in 1776, with an appendix on
trigonometry and a set of tables. His work on _Mathematical Tables_
appeared in 1809, and his _Art of Drawing in Perspective, from mathematical
principles_, in 1810.

[526] See note 443, on page 197.

[527] John Playfair (1748-1848) was professor of mathematics (1785) and
natural philosophy (1805) at the University of Edinburgh. His _Elements of
Geometry_ went through many editions.

[528] "Tell Apella" was an expression current in classical Rome to indicate
incredulity and to show the contempt in which the Jew was held. Horace
says: _Credat Judaeus Apella_, "Let Apella the Jew believe it." Our "Tell it
to the marines," is a similar phrase.

[529] As De Morgan says two lines later, "No mistake is more common than
the natural one of imagining that the"--University of Virginia is at
Richmond. The fact is that it is not there, and that it did not exist in
1810. It was not chartered until 1819, and was not opened until 1825, and
then at Charlottesville. The act establishing the Central College, from
which the University of Virginia developed, was passed in 1816. The Jean
Wood to whom De Morgan refers was one John Wood who was born about 1775 in
Scotland and who emigrated to the United States in 1800. He published a
_History of the Administration of J. Adams_ (New York, 1802) that was
suppressed by Aaron Burr. This act called forth two works, a _Narrative of
the Suppression, by Col. Burr, of the 'History of the Administration of
John Adams'_ (1802), in which Wood was sustained; and the _Antidote to John
Wood's Poison_ (1802), in which he was attacked. The work referred to in
the "printed circular" may have been the _New theory of the diurnal
rotation of the earth_ (Richmond, Va., 1809). Wood spent the last years of
his life in Richmond, Va., making county maps. He died there in 1822. A
careful search through works relating to the University of Virginia fails
to show that Wood had any connection with it.

[530] There seems to be nothing to add to Dobson's biography beyond what De
Morgan has so deliciously set forth.

[531] "Give to each man his due."

[532] Hester Lynch Salusbury (1741-1821), the friend of Dr. Johnson,
married Henry Thrale (1763), a brewer, who died in 1781. She then married
Gabriel Piozzi (1784), an Italian musician. Her _Anecdotes of the late
Samuel Johnson_ (1786) and _Letters to and from Samuel Johnson_ (1788