Gguld, P. J. 1964--At Sea 208 12 Feb 1815--100 plus Sooty Tern towards Johnston 2 Red-footed Booby towards Johnston 1820--25 Sooty Tern 1825--secured observations Sooty Terns heard in large numbers steadily through 2045 hours. Again at 2305, about 10 birds Upon leaving the dock at Johnston Island we noted a mixed flock of Sooty Tern and Frigatebirds directly over Sand Island. We kept this flock in sightand noted the time when we could no longer see the birds or recognize them. These times were compared with the ship charts and established accurate milage from each check point to the flock of birds. time mileage to flock remarks 1607 7/8 mi. Frigates recognizable to species Erns not recognizable to species 1608- 1 1/4 mi. Single Frigates can be seen, single terns can not be s en. 1610 1 3/8 mi. flock looks 1/2 actual size 1611 1 1/2 mi. ca cannot see Terns 1612.5 1 7/8 mi. Frigates barely viable 1614 2 -i. Frigates not visible Terns can be recognized to species at about 1/2 mi. February 13, 1964--Pacific Ocean, Grid Area SW Johnston Island 0555--began watch birds present around bridge at 0330 and 0400 this morning 0703--1 Laysan Albatross ESE 0824--2 Red-footee Booby NE 1 Imm and 1 Sub adult 0924--1 Masked Booby NE 30' ad.