approximately the same and tho bottem rock was about the sans. Conseguontly, sa conpawne one station with another, wa vould have something closer to leok at than if wo picked a Ingoon area in one piace anda fast river in another, 0 jThes orsonis2s which we pick up in the Columbia tt River do contain radioactive materials which they have gained fron the water. &S you have heard from the previous speakers, these thines vary vather temendousiy according to species. a a This particular kind of a distribution will change in with season, bat if wo pick ont the Inte summer period close ony to the pile, this is the tyne of distribution that we get. This (indicating) may be surprising to you. The mid-larvae ars often more radiosetive than tze Plankton but, characteristically, through the major part of the area, the Plankton will be the most radioactive part of the substance. The organisms that feed close to these bottom forms are the small organisms which are much more radioactive than the ones which might be characterized as the larger fish which are furthor up the. food chain, The white fish is a bottom feeder It usually is quite a little bit more radiczetive than tho bass which is a... type of fish. This relationshin becones apparent later where the bass drop oif in their feeding habits. The white fish continus feeding later in tho fall, and we often se2 white fish tvo or three tines more radioactive than the bass.