EXPerimMents In Fisu-cuLTure. 355 
CHAPTER II. 
FISH-CULTURE OF THIS CENTURY. 
aes ; \ ODERN fish-culture is 
: age ( indebted to only thir- 
ty years’ practice for 
all the wonders it has 
achieved. The early 
part of the present cen- 
tury was unfavorable 
to the development of 
industry. War en- 
gaged the attention of 
the civilized world. 
Many improvements 
known in France, Ita- 
ly, Germany, and En- 
gland at the commencement of their revolutions, were lost 
to this century; but the calm which peace restored fructified 
genius and utilized its discoveries. 
In 1820, MM. Wivert and Pilachon, two inhabitants of the 
Haute- Marne, fecundated eggs of trout. After hatching, they 
took the “ aevins” (the young, before the umbilical sac is ab- 
sorbed) to the waters which they desired to stock. These 
facts, though confirmed by JL de Montgaudry and AL Jour- 
dier, lid not electrify the public mind, or even cause a single 
government to put forth an effort for restocking depleted 
waters to cheapen food. So the matter lay dormant again 
seventeen years, when John Shaw, of Scotland, fecundated the 
egos of a salmon, and hatched them by artificial means, which 
resulted in a memoir of his experiments relative to the prop- 
agation of salmon. But this, instead of causing efforts to be 
