the _Compendium Anatomicum nova methodo institutum_
(1695), in which he defends Harvey's theories of embryology.

[267] Marcelis (1636-after 1714) was a soap maker of Amsterdam. It is to be
hoped that he made better soap than values of [pi].

[268] John Craig (died in 1731) was a Scotchman, but most of his life was
spent at Cambridge reading and writing on mathematics. He endeavored to
introduce the Leibnitz differential calculus into England. His mathematical
works include the _Methodus Figurarum ... Quadraturas determinandi_ (1685),
_Tractatus ... de Figurarum Curvilinearum Quadraturis et locis Geometricis_
(1693), and _De Calculo Fluentium libri duo_ (1718).

[269] As is well known, this subject owes much to the Bernoullis. Craig's
works on the calculus brought him into controversy with them. He also wrote
on other subjects in which they were interested, as in his memoir _On the
Curve of the quickest descent_ (1700), _On the Solid of least resistance_
(1700), and the _Solution of Bernoulli's problem on Curves_ (1704).

[270] This is Samuel Lee (1783-1852), the young prodigy in languages. He
was apprenticed to a carpenter at twelve and learned Greek while working at
the trade. Before he was twenty-five he knew Hebrew, Chaldee, Syriac,
Samaritan, Persian, and Hindustani. He later became Regius professor of
Hebrew at Cambridge.

[271] "Where the devil, Master Ludovico, did you pick up such a
collection?"

[272] Lord William Brounker (c. 1620-1684), the first president of the
Royal Society, is best known in mathematics for his contributions to
continued fractions.

[273] Horace Walpole (1717-1797) published his _Catalogue of the Royal and
Noble Authors of England_ in 1758. Since his time a number of worthy names
in the domain of science in general and of mathematics in particular might
be added from the peerage of England.

[274] It was written by Charles Hayes (1678-1760), a mathematician and
scholar of no mean attainments. He travelled extensively, and was deputy
governor of the Royal African Company. His _Treatise on Fluxions_ (London,
1704) was the first work in English to explain Newton's calculus. He wrote
a work entitled _The Moon_ (1723) to prove that our satellite shines by its
own as well as by reflected light. His _Chronographia Asiatica & Aegyptica_
(1758) gives the results of his travels.

[275] _Publick_ in the original.

[276] Whiston (1667-1752) succeeded Newton as Lucasian professor of
mathema