Figure 17. Photomicrographs of Engebi beach sand on ashing plates counted May, 1953. Magnification 23x, except for A and D which are &x. n Photo c/m Description or remarks A 1,970 B 1,680 D 1,130 E 3,300 F 1,160 G 2,900 H 2,900 I 4 ,000-5,000 estimated using end window survey meter. J 1,400 K 1,900 L 8,000 C 930 M 2,000 N 0 P 7,800 450 6,000 Q 1,300 R 300 Entire sample weighing 6.2 mg typical of plates 1 through 100. White sphere from upper right portion of A. Another white sphere fused to a larger irregular particle. Most of sample showing sphere of C near bottom. Central, white sphere bearing two protrusions. Total plate 3,800 c/m. White sphere fused to irregular particles. Total plate 2,900 c/m. Spheroid with equatorial protrusions. 3,200 c/n. Total plate Other side of same particle (G) showing a dark inclusion. Fragments of a white, hollow sphere broken in handling. Total plate 5,500 ofa. Three irregular particles. Total plate 2,100 c/m. Central, white sphere with protrusions. plate 2,200 c/n. Total Hottest" particle encountered; sphere with pro- trusion. Plate 8,600 c/n. Irregular particle with heat~smoothed appearance. End view of mottled, gray cylinder lmm long. Unsmoothed, chalky fragment. Particle with heat-smoothed appearance of upper surface. Mottled, irregular particle. Eight particles some of which were suspected of being radioactive from their appearance,but which gave no reading on end window survey meter. - 87 -