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were crossed, and the hybrid offspring was crossed by an 
Amherst, and a fine male bird obtained. The Chinese goose has 
been crossed with the common goose, and young obtained, and 
from these other young birds were obtained. Similar hybrids 
between the Chinese and common goose were crossed with 
females of the common goose, and also those of the Chinese 
species. The pintail and farmyard duck paired, and from the 
hybrid offspring one drake paired with one duck, and four 
ducklings were hatched. A hybrid female dusky duck and wild 
duck, bred with a dusky duck. Several instances of hybrid 
finches have likewise been recorded as giving rise to fertile 
offspring. Among fishes, the ova of hybrids between trout and 
char have been fertilized with trout milt. Hybrids between 
salmon and trout have been successfully employed to fertilize 
eggs of Lochleven trout. Eggs of the Lochleven trout were 
fertilized from the milt of the American char, and from the 
milt of these some Lochleven char were fertilized. Here, 
although some of the eggs eyed, none hatched. Hggs of the 
American char were milted from Scotch char: eggs and milt 
from some of these hybrids were procured and crossed, and from 
these fertile young were produced. Hybrids between the 
American and British char were crossed with Lochleven trout, 
and from them young were produced. 
Having now adduced instances of hybrids having been crossed 
either with similar hybrids or pure races, it becomes necessary 
to show how hybrids of the second generation have been known 
to give fertile offspring. Among mammals I would instance the 
zebu crossed by a gayal, the resulting hybrid crossed by an 
American bison, a female hybrid so produced being crossed by a 
bison, and giving a fertile progeny. Among birdsa male golden 
pheasant has interbred with an Amherst, and the hybrid off- 
spring crossed by a pure Amherst. While in our covers and in 
a wild condition the common pheasant has freely crossed with 
the ring-necked and other species through many generations, 
and so far without showing signs of sterility. Ducks have 
similarly interbred. Among fish American and British char 
have been crossed, and these hybrids again crossed among them- 
