seu salt wnien mizat unadvertently nave been included at the time of rreservation., The August 1956 samples including preservative, were evaporated to dryness, so that. the sample from Station 7 in- ciuding galt water acelientally used for washing the plankton bucket, 7 . Loe ippesred iow in rucioactlivity. the careful werk of Dr: Rem2; Geldray mn precessing the plankton samples of August 1958 1s gratefully acknowledged. vata efter 1356 are presented as of the date of counting, rather than teing corrected back sto date of collecting as was done for the 1964-55 macerlal. It is probable that if corrections for decay could have been appiied to the 1356 data the levels on the date of collection woula huve been fourd to be about twice as nigh as those here given for the dite of countins, but data from later collections would meve heon preesias lls cunastered, Resulys and discussion \ T tles Ll and 2 sive the plu.kton data from 1954 to 1968, includ-_ ing vhe v.ilues from whien Turtle was comiled. Individusl plate values appear in order to show the Jegrec of virl.ovllityv, 12 of the preceding report, UWFL-~43, ia and fur i1)54-55 to permit comparison of coarse and fine me3n net samples, Fa iloactivity is expressed per unit velight of Louh wet plankton and plunktonie ash in order to assess the relative Sustatliity of these tvo bases of reporting results. w2vels of radioactivity were equaliy high in coarsenin fine meshed nots. basis The equality prevails on either wet weight or ash weight imons the ten pairs of simultaneous tows with coarse and fine joo.