ND OV q& DONALDSCN: year, The dose has We started out at been in-sreasing year by .§6 r per day; wens to lr per day, For how many days does this go on? DONALDSON: Approximately 100 days. During the or EISENBUD: entire incubation period, wow w day. wn ae then to_2, now 2.5, and this year we're gong up-to 5 r rer put them in a chamber and expose them to your cobalt~60 of experiment, This is one advantage of this sort You have a built-in food supply and you can 10 Source, expose them for this 100 days. 11 days they are ready to start to feed and then you start to 12 take them out. 13 through their entire embryological field. 14 At the end of 100 But at the end of that 100 days they're going BRUES: They're fully formed, There's some evidence aprearing now that the 15 earth's magnetic field flops over every so often which lets 16 in little meteorites and cosmic radiation. 17 time that this was supposed to have happened coincides more or 18 19 I telieve the last ‘less with the tine when man first appeared on earth, That is rather speculative, of course, 20 FREMONT-SMITH: 21 same time, too! 22 interrupt you, 23 BURES: 24 WARREN: [Laughter] No, Do the salmon get bigger at the Go ahead. I didn't mean to This is the whole story, He has indicated that there are periods of 25 bursts of irradiation which do affect this at different times 26 due to the shift. 27 men study all of the abnormalities that can be produced 28 these fish with irradiation and 29 from this, depending upon the dose rate, 30 abnormalities that have been ascribed to tris “other species 31 and the large lethaS are included in this list, 32 dose rate 33 low, aren't they? Lauren ought to also teil you that he has in there's a certain mortality You get all of the But at this your abnorralities and your leth:.1 effects are pretty Staftc.c fee DOE/UCL-. 1 S;