-5PM ~ 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 lst BLS. follows: #1. #2. #3. #4. These samples were composited for four areas as Center base line to lst BLS - Row 24. 1st BLS to 2nd BLS - Row 24 Center BL to lst BLS - Row 34 1st BLS to 2nd BLS ~ Row 34 © ° The row numbers are the numbers given to the original rows of coconut trees and are 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. 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 had a mixture of dark organic soil and coral gravel to a depth of about 100 cm, and coral sand below 100 cm. #2. Ten yards south of the center base line on Row 24. This pit had a #3. Five yards north of Ist Base line south on Row 24. This pit had fine mixture of black organic soil and coral gravel from 0-30 cm, black organic soil and coral sand from 30-75 cm, and coral sand below 75 cm. dark organic soil from 0-35 cm, light gray coral sand from 35-50 cm, lighter shade of coral sand from 50-75 em and whife coral sand below about 75 cm. Soil samples were taken by side wall sampling from these three soil pits at the folloving intervals, in cm, 0-2.5, 2.5-5, 5-19, 10-15, 15-25, 25~35, 35-59, 50-75, 75-100, 100+. These intervals varied in some cases, cue to differences in soil horizons between the pits. L.] Bumker Redwing TB sort Ait #2 Fad Row 3Y XXX XK KM KK RK KK KK 5 Pandan us Slesoe/ Pit 7 Chhrouse ajeonRoad 1>* Base Line South % XX KK XIXK KXKK KKM -—— Soil on oN xx BT ~_—~ pt ’ 3