The sun., 1903-06-14
GREAT SWIMWERS. THESE.
Young Rainbow Trout at tho Aquarium
DO Wonderful Feats.

What little trout can do In the way Of
Jumping ard in the way Of swimming up
hill against current was shown late,
in the case of a lot Of agile youngsters al
the New York Aquarium. These ltte
brown trout, two inches or thereabou
in length, would jump a height equal to
their own length up waterfall from ar
inch pipe seven inches long. and thel
swim up the pipe to the trough above
But some little rainbow trout Matched Al
the Aquarium have lately done something
much more remarkable than that.
Shad eggs at the Aquarium this spring
were hatched in jars from which siphon
tubes ran to tanks close by. As the fishes
were hatched out they rose naturally
to the top Of the water in the jar, where
they were caught in the current setting
toward the opening into the sphon tube
and siphoned Of into the tank
A half inch foot-long glass tube rising
through an opening in the top Of the jar
formed part Of the siphon. to the top OF
this glass tube being attached rubber
pipe to form the curving part. This rub
Der tube, which was half an inch In diam
eter inside, ran up to and over an iron rail
on which 1t was supported, curving down
from there and rising again in an upward
curve to the edge Of the tank, upon which
the pipe again rested, the end Of tho pipe
being carried down under the surface. In
tho water Of the tank.
While there are at the moment no egg
In process Of Matching in them, the jars
are not dismantled, but the water is kept
circulating through them and young fishes
are shown in the tanks. Thus there are
now In one of the tanks a lot Of young ram
bow trout. They were hatched out here
last February, and the biggest are about
~ inches in length.
These little rainbows are all the time
lettering around the opening OF the siphon
tube, through which a current ia always
flowing, just as the fishes in any aquarium
tank may be found around the tank intake,
and they are all the time trying to make
their way up the pipe, as they would try to
make their way up the current Of a stream
Of the very biggest, last week did make
their way from this tank through the
siphon tube and over into the jar with
which the tube connects.
To do this these two little rainbows had
scarcely greater in diameter than thei
own width with pectoral fins extended
this narrow pipe being nearly three fee
In length and presenting to them a totai
rise OF eight inches or more In two ascend
ing CURVES. II was q steep rise for them
for the first few inches of the pipe, to whert
1t rested on the edge Of the tank, from whic
point they slid down into the valley formed
by the downward curve Of the hose. out
side the tank; while from there they had 70
climb, with the upward curve OF the bose,
the steep incline to where the hose was
over that, Of course, they couldn't do other
wise than drop, head hrst, down the glass
pipe into the jar. -,
The Matching jars are like big. tall. wide
mouthed bottles, with screw tops, through
which run the intake pipe and the sphon
tube. It was, Of course, necessary 70
unscrew the top OF the jar into which the
two young rainbows had thus made their
way In order to got them out and rseusn
them to thslr tank.