at the ten consecutively numbered stations indicated in Figure l, ranging along the southern ani eastern portions of the lagoon, Loti plankton and bottcm material were sampled. At the first four Statioius sea water was pumped from astern of the “Aloto"” by means of 2 high-speed, casoline powered, firefighting pump with a capacity of about 4.2 Salilons per minute, while at the other eix stations amore reliabie, suomersible, electric pump operating alongside the Ssr.ip gave 180 gallous per minute. Pumping contimed for 30" minutes - with tne mouth of tne net above water, so that all pumped water went trroaza the net. Pulping, as here cone, aithough more quantitative, desirable tnan towing for two reasons. was less Smaller samples of plankton were obtained, and detris from the ship seemed unavoidable. Praservation of tne plankton was in alconol except for the tows in Aucist near Kabelle Island. Here the bucket was removed from tne net und tne end of the net tied closed. Washed down, After towing, the net was drained, untied, and the plankton scraped directly into Suull plastic Lags.in which it was later dried at 80°C. without preSservative. This simplification avoided the almost inevitable leakage | at the bi,onet-type fitting of the plankton bucket, Proeessing; and expedited the it is recommended where radio-assay is the primary ob- jective. For latoratory processing of the March 1958 samples, tne pre- Servaiive fluid was filtered from the plankton and tested for radioactivity (practically lacking) before discarding. This avoided most GR.