# HOSPITAL

, *or* Hopital (William-FrancisAnthony,
*marquis of),* a celebrated French mathematician,
was born of an ancient family in 1661. He
was a mathematician almost from his infancy; for
being one day at the duke of Rohan's, where some
able mathematicians were speaking of a problem of
Pascal's, which appeared to them very difficult, he
ventured to say, that he believed he could resolve it.
They were surprised at such presumption in a boy of
15, for he was then no more; however, in a few days
he sent them the solution.

M. l'Hospital entered early into the army, and was a captain of horse; but being very short-sighted, and on that account exposed to perpetual inconveniences and errors, he at length quitted the army, and applied himself entirely to his favourite amusement.—He contracted a friendship with Malbranche, and took his opinion upon all occasions.—In 1699 he was received an honorary member of the Academy of Sciences at Paris.

He was the first person in France who wrote upon
Newton's analysis, and on this account was regarded almost
as a prodigy. His work was entitled *l'Analyse
des Infinimens Petits,* 1696. He engaged afterwards in
another mathematical work, in which he included *Les
Sections Coniques, les Lieux Géometriques, la Construction
des Equations, et une Théorie des Courbes Mechaniques:*
but, a little before he had finished it he was seized with
a fever, which carried him off, the 2d of February
1704, at 43 years of age. The work was published
after his death, viz, in 1707. There are also six of his
pieces inserted in different volumes of the Memoirs of
the Academy of Sciences.