King, Warren, B. 1964 29 Four Sanderlings seen at 1142 in winter plumage still. The Sooty Shearwater parade started at 1216 with 28 certain or probables going by during the day. A Bulwer's Petrel and a possible one were seen at 1218. At 1450 recorded the trip's first White-tailed Tropicbird. Only one Harcourts SP. today, a type B. Tonight Bob and I start taking BT casts with Mel Kau, every 2 1/2 hours around the clock. Jolly good fun. March 23--Two groups of Sooty Terns were observed at dawn. The early morning (0619) count revealed five Black-footed Albatross behind us. This number went down to three during mid-day and increased to six at dusk. A Sanderling was seen by Sundell at 0726. This is the third sighting of this shorebird. AT 0850 what appeared to be the remnants of a feeding flock drifted past: Two Sooty Terns and several shearwater/petrels. The first Sooty Shearwater appeared at 1150. Their numbers were down today (five) but should pick up again. If they don't pick up it may mean we have discovered the eastern extension of their migration route north. A slow day with heavy seas. Spare time at present is taken up with BT casts, catching up on sleep and paperwork. Essentials of a BT cast: 1. Temperature of surface water 6. Relaying radio message if at 2. Surface salinity sample at 2, 8, 2 or 8. 3. Drift card dissemination 7. Weather if at 2, 8, 2 or 8 4. BT cast, wash slide with fresh water 8. Relaying weather message 5. Logging in cast 9. Plotting BT profile 10. Logging in BT in Scientists log 11. Engraving BT slide with time, No., date, cruise, etc.