edCE Y Ty NO. II9 PPT ab a 11213 i i 1 i FIG.9 NO. 43 NO. st 1 i 1 l i j 1 jd 4 i A 14 15 16 17 18 19 20 21 22 232425 26 2728 2930 JUNE H9 USED e RADIOACTIVE 1 | 1 2 3 JULY DECAY OF PLANKTON SAMPLES FOR CORRECTING SAMPLES FROM SECTIONS | TO it it iT i) ut] fa COUNTS PER MINUTE PER SAMPLE rf 24 aes wat ; 6TO