In ouv test, wa Know that 50 parts to a million was
way too much,
Five parts por million was way teo rmech, Tas
stvonzest w2 used was half a part per million, and this is the
result that wa get, and dichromate runs for months at a tins
ata half a part por million, and theso are tho mortality figursos
which wo gat.
The esas -- fina -- practicality no nortality
even at this level (indicatinz).
During the fry stage, we
see mortality and during the finzyerlinzg stases this mortality
increases.
This is in torms of mortality (indicating); a slowing
of the growth rate is even more spoctacular, and we sea again
the control.
Almost all of these are slightly less.
. should be four.
The two and the four,
This
these ave not statistically
significant, but from the .05 on down, it is statistically sisgnificant in terms of a slower growth rate,
So, wo find out that
we are -- and in terms of a conventional types of toxicant -- wehave a factor of probably one one-thousandth of tho assumed
toxicity of a conventional type of chemical.
This brings up a
point where I am not Suro that we know enough about radioactivity,
and its effects, as we do avout soma of the old chemicals that
have bean around for a geod many years in terms of these chronic
studies.
- With respect to temperature, the species with waich
we are most concerned are the salmon.
We know that we can put
carp ox something of this sort in the straight efflucat at very
high temperatures, and they get along very fine.
Ye also linew van.