37 
was tender even to excess ; and although he had now a wife and two 
children depending on him, he resigned all his employments and 
retired into voluntary exile in Switzerland, sacrificing his prospects 
“ to devotion to the unfortunate, and the sincere love of truth.’’ 
The King of Sardinia, informed of the circumstance, created for 
him a Chair of Mathematics in Turin. This appointment he ac- 
cepted, and lectured in the Italian language with great success. 
There he recommenced the publication of his Exercises , under the 
appellation of Resumes A nalytiques . Having remained in Turin about 
two years, the voice of his sovereign (Charles X.) called him to Prague, 
to take part in the education of the Count De Chambord. At Prague 
he was rejoined by his wife and family ; and for the succeeding six 
years he attached himself to the persons of the royal exiles. 
Again he resumed his Exercises ; and having, I believe, plenty of 
spare time on his hands, he appears to have amused himself with 
lithography. In this new form he issued his publications ; and it 
is to be feared that a complete set does not exist. I have the im- 
pression that M. Cauchy informed me, with his own lips, that he 
did not himself possess copies of all his lithographed memoirs. At 
any rate, they are almost unknown even in France. 
Charles X. died on the 6th of November 1837 ; and M. Cauchy’s 
functions as tutor to the Count of Chambord having ceased, he 
returned to Paris in 1838, and resumed his place at the Institute. 
He now took the title of Baron Cauchy, but whether by succession 
or by creation I do not know. Having no public occupation, he 
divided his time between the pursuits of science and the performance 
of deeds of benevolence. In both his voluntary labours he was in- 
defatigable. The time he bestowed on each seemed to preclude the 
possibility of his having a moment for attention to the other. During 
the last peaceful nineteen years of his life he published in the ditfer- 
ent volumes of the Institute, and in the Comptes Rendus , upwards 
of five hundred memoirs, besides a multitude of reports and 
criticisms. This immense mass of work abounds in new thoughts, 
new methods, and sweeping generalizations, and may be regarded 
as a vast storehouse from which the next generation of mathe- 
maticians will draw their resources. It is to be regretted that M. 
Cauchy did not concentrate his attention more. Many of his papers 
are in a very rude state, containing only the germ of an idea, which 
