STRATUM 6 NGC North East 239-240, | 936259 936326 936261 936152 936271 936057 935990 936085 936279 936212 936323 935945 936120 936140 936263 936277 936063 936327 935915 936071 936239 936177. 721112 720973 721124 721541 720879 721253 721597 721276 721122 720923 720944 721279 721610 721538 721001 721341 721026 721043 721350 721168 721373 721032 529. 603. 885. 83.0 368. 594. 325. 659. 1370. 658. 53.7 505. 173. 30.5 592. 90.4 540. 268. 190. 640. 151. 232., 936216 936118 936134 936016 936108 935964 936107 936264 935999 936085 936008 936254 936031 936303 936119 936250 936035 936258 935986 936041 936248 936004 936209 936082 721404 721091 721487 721239 721355 721313 721189 721080 721093 720983 721589 720941 720988 721231 721341 720894 721348 721218 721595 721099 720973 721238 721451 721070 269. 370. 202. 391. 16400.1t 414, 631. 1130. 176. 176. 264. 74l. 716. 179. 1170. 260. 1300. 141. 719. 523. 663. 391. 133. 655. 936250 721068 1010.’ "New 10-gram aliquots of these two samples were analyzed after the sta~ tistical analyses in this paper were completed. The new results were 954 and 14,300 uci/m2 as compared with 1010 and 16,400 uci /m2, respective- ly. The new results were used by Delfiner and Gilbert (1978). 360