This interview must have taken place in 1802, during
HERSCHEL'S journey to Paris. We have no other record of it.

[28] The will of HERSCHEL was dated December 17th, 1818.

"The personal effects were sworn under L6,000. The copyhold and other
lands and tenements at Upton-cum-Chalvey, in the County of Bucks, and at
Slough, he decrees to his son, with L25,000 in the 3 per cent. Reduced
Annuities. L2,000 are given to his brother JOHANN DIETRICH, and
annuities of L100 each to his brother JOHANN ALEXANDER and to his sister
CAROLINA; L20 each to his nephews and nieces, and the residue (with the
exception of astronomical instruments, telescopes, observations, etc.,
which he declares to have given, on account of his advanced age, to his
son for the purpose of continuing his studies) is left solely to Lady
HERSCHEL."--_Gentleman's Magazine_, vol. xcii., 1822, p. 650.

It is not necessary to say here how nobly Sir JOHN HERSCHEL redeemed the
trust confided in him. All the world knows of his Survey of the Southern
Heavens, in which he completed the review of the sky which had been
begun and completed for the northern heavens by the same instruments in
his father's hands. A glance at the Bibliography at the end of this book
will show the titles of several papers by Sir JOHN, written with the
sole object of rendering his father's labors more complete.

[29] He was created a knight of the Royal Hanoverian
Guelphic Order in 1816, and was the first President of the Royal
Astronomical Society in 1821, his son being its first Foreign
Secretary.

[30] BODE'S _Jahrbuch_, 1823, p. 222.

CHAPTER IV.

REVIEW OF THE SCIENTIFIC LABORS OF WILLIAM HERSCHEL.

In this chapter I shall endeavor to give such explanations as will
enable the general reader to follow the course of discovery in each
branch of astronomy and physics, regularly through the period of
HERSCHEL'S life, and up to the state in which he left it.

A more detailed and precise account, which should appeal directly to the
professional astronomer, will not be needed, since ARAGO has already
fulfilled this want in his "_Analyse de la vie et des travaux de Sir
WILLIAM HERSCHEL_," published in 1842. The few misconceptions there
contained will be easily corrected by those to whom alone they are of
consequence. The latter class of readers may also consult the abstracts
of HERSCHEL'S memoirs, which have been given in "_A Subject-index a