a! a} Fig. 4.13a Photomicrographs of Engebi beach sand on ashing plates counted May 1953. (A) 1970 c/m, Entire sample weighed 6.2 mg, which is typical of plates 1 to 100. Magnification, 8x. (B) 1680 c/m. White sphere from upper-right portion of (A). Magnification, 23x. (C) 930 c/m. Another white sphere fused to a larger irregular particle. Magnificarion, 23 x. (D) 1130 c/m, Most of sample showing sphere of (C) near bottom. Magnification, 8x. Fig. 4,13b—Photomicrographs of Engebi beach sand on ashing plates counted May 1953, (A) 3300 c/m, Central white sphere bearing two protrusions, Total plate, 3800 c/m, Magnification, 23x, (B)1160 c/m. White sphere fused to irregular particles, Total plate, 2900 c/m. Magnification, 23x. (C)2$u0 c/m. Spheroid with equatorial protrusions. Total plate, 3200 c/m. Magnification, 23x. (D) 2900 c/m, Otherside of particle shown in (C) showing a dark inclusion, Magnification, 23x. NCLASSIFIED we ee