had a solution, but he would not produce it. After waiting some time for
it Halley went to Cambridge to consult Newton on the subject, and thus
discovered the existence of the first part of the _Principia_, wherein
all this and much more was thoroughly worked out. On his representations
to the Royal Society the manuscript was asked for, and when complete was
printed and published in 1687 at Halley's expense. While it was being
completed Newton and seven others were sent to uphold the dignity of the
University, before the Court of High Commission and Judge Jeffreys,
against a high-handed action of James II. In 1682 he was sent to
Parliament, and was present at the coronation of William and Mary. Made
friends with Locke. In 1694 Montague, Lord Halifax, made him Warden, and
in 1697 Master, of the Mint. Whiston succeeded him as Lucasian
Professor. In 1693 the method of fluxions was published. In 1703 Newton
was made President of the Royal Society, and held the office to the end
of his life. In 1705 he was knighted by Anne. In 1713 Cotes helped him
to bring out a new edition of the _Principia_, completed as we now have
it. On the 20th of March 1727, he died: having lived from Charles I. to
George II.

THE LAWS OF MOTION, DISCOVERED BY GALILEO, STATED BY NEWTON.

_Law 1._--If no force acts on a body in motion, it continues to move
uniformly in a straight line.

_Law 2._--If force acts on a body, it produces a change of motion
proportional to the force and in the same direction.

_Law 3._--When one body exerts force on another, that other reacts with
equal force upon the one.

LECTURE VII

SIR ISAAC NEWTON

The little hamlet of Woolsthorpe lies close to the village of
Colsterworth, about six miles south of Grantham, in the county of
Lincoln. In the manor house of Woolsthorpe, on Christmas Day, 1642, was
born to a widowed mother a sickly infant who seemed not long for this
world. Two women who were sent to North Witham to get some medicine for
him scarcely expected to find him alive on their return. However, the
child lived, became fairly robust, and was named Isaac, after his
father. What sort of a man this father was we do not know. He was what
we may call a yeoman, that most wholesome and natural of all classes. He
owned the soil he tilled, and his little estate had already been in the
family for some hundred years. He was thirty-six when he died, and had
only been married a few months.

Of the mother, u