394 Correspondence of J. Nicklés. 
ployed for reducing work in high relief. This valuable instrument has 
been the means of furnishing, at small cost, multitudes of copies of the 
best works in statuary. This process, still employed by Mr. Henry Sauv- 
age, the son of the inventor, is now used at the Louvre, and ought soon 
to supply all the academies and schools with a collection of fine models. 
The hydraulic bellows, by which water may be raised to a height de- 
termined by the weight of the column of water, was the last invention of 
Frederic Sauvage. This machine is applicable to a multitude of uses, 
nd may replace with economy the pumps used for irrigation and fire- 
engines. 
As observed above, the life of Alexis Sauvage was much like that of 
Peneeres and before speaking of his works, we may relate briefly his 
isto 
Alexis Sauvage was born in 1781, near Paris, of parents who were 
common laborers. Without home resources, he had only his skill and his 
knowledge to rely upon. By ardent application, he rapidly familiarized 
himself with mechanical science; and his example may be an encourag 
ment to the young without means, showing what may be accomplished 
by perseve nd study. 
Alexis Sauvage entered as apprentice at Bellevue, in the manufactory 
of the locksmith, Gamin, who gave lessons, as is known, to Louis x 
Becoming well versed in his profession, he was afterwards employed as 
a mechanic in the government worksho 
tion under its own control, a company was formed in f 
auspices of the King, with the aid of Chaptal and other scientific no 
tabilities. Sauvage was made superintendent of the illumination of 
