-5~ ~M - Nelson and Ash took surface soil samples, coconut fronds and y readings along coconut rows 24 and 34 from the center base line to the 2nd base line south. . Samples were taken at every 15th coconut tree, starting with the tree south of the center base line or Ist BLS. These samples were composited for four areas as Talent, fotlows: - * - ; #1. Center base line to Ist BLS - Row 24. #3. #4. Center BL to Ist BLS - Row 34 Ist BLS to 2nd BLS ~ Row 34 ist BLS to 2nd BLS — Row 24 ° ted #2. VATA n The row ‘numbers are the nunbers given to the original rows of coconut trees andare those used in reports of the 1969-70 and 1972 surveys. A row of coconut trees has since been planted between the original rows of trees. Nelson and Ash began a gamma survey of the houses. tn fiah ealieetred an redfenneliden Trelftotnary Data 1? Ary 12-April (Friday) ~ Bikini Island _ AM - Ash continued gamma survey of houses. Nelson had a backhoe operator dig three soil pits in the following areas: #1. Ten yards south of the center base line and 30 yards inland from the first house south of the center base line. This pit is about 8 feet from a Pandanus tree from which fruit and leaves were collected. This pit hada mixture of dark organic soil and coral gravel toa depth of about 100 em, and coral sand below100 cm. #2. Ten yards south of the center base line on Row 24. This pit had a mixture of black organic soil and coral gravel from 0-30 em, black sr 2. organic sof] and coral sand from 30-75 cm, and coral sand below 75 cn. #3. Five yards north of Ist Base line south on Row 24. This pit had fine dark organic soil from 0-35 cm, light gray coral sand from 35-50 cn, lighter shade of coral sand from 50-75 cm and whife coral sand below abaut 75 cn. . - Soil samples were taken by side wall sampling from these three soil pits at the following intervals, in em, 0-2.5, 2.5~5, 5-10, 10-15, 15-25, 25~35, 35-50, _ 50-75, 75-100, 100+. These intervals varied in some cases, due to differences in oil horizons between the pits. t (0 Bumker Row 24 . ake Soil XK EX KKK KR XK KK A KK KKK KN fad wy i "Soil Prt #2 . a Row 34 XXXKKX KKM KK RK KR KEK K Pandan ius . eSor/ Pt 7 Coase | 1°? Base Line South Red win Re Lagoon Road _ At *