ee 
104 Scientific Intelligence. 
of April, this last work of M. Laurent will be printed and published,— 
he 
even with its imperfections, for no changes will be allowed ; even 
punctuation throughout will be respected, although he considered it 
cation of smalt, ete. Being then named to the modest place of chemist 
to the manufactory of porcelain at Sévres, at that time directed by. 
Alex. Brongniart, he made his researches on the cementation of steel; . 
“he studied the products of distillation of the oils of bituminous schist ; 
he proposed the use of paraffine and of different carbo-hydrogens 
the glory of his illustrious reputation, to the latter, his example ; to all 
a model of self-denial, of ‘devotedness, and of sacrifices. ‘ 
Repeopling of Streams with fishes, or Pisciculiure.—In my last com- 
munication I mentioned briefly the experiments of M. Millet on the 
repre of fishes. I have said that, thanks to the modest fisherman 
the good kinds of fish, the spawn having been destroyed by manufac: 
tories along the water courses, by steamboats, drainage-works and 
inundations. ' 
A paper by M. Haxo, secretary to the Société d’Emulation des Vos- 
ges, gives the history of this important invention, and reviews the — 
means employed by Rémy for populating with trout the streams of his 
neighborhood. This fisherman observed the time when the female de- 
posited its eggs; he remarked that the male then comes and 
over it the fecundating liquid; and as our observer could but imperfectly 
