a fair fauna - Collection 8/5/58/4 has Schwagerina sp. cf. to those in the Hess ledge in Lenox Hills. Limestone conglomerate below 180'-200'. PG. 131 I believe the upper part of this western Hess Horst Hill is equivalent to the interval above the dolomite and below the light limestone on Leonard Mt. The dolomite seems to be restricted to the massive limestones, (and calcarudites near intrusions) and shaly limestone intervals escaped dolomitization. If the dolosands were calcarenites originally, the porosity may be the controlling factor. The Faults on the north side of this hill seems to cut the Leonard (light) limestones, but to swing westward and become bedding place faults in the shaly and limestone interval at the top of the "Wolfcamp" in general. Collection 8/8/58/1,3,4 - are probably from the same horizon as 8/2/58/3 and 8/2/58/5. I believe some of the "Wolfcamp" section above the conglomerate on the Western end of Hill is missing as a result of faulting. PG. 132 The fault which I believed cut Section 39 isn't there - add 75' to that section! The structure in the lower shaly beds must be related to a NE-SW fault or to the intrusion (or both). PG. 133 8/9/58 Mapped East side Leonard Mt. Collection 8/9/58/1 - from probably a chunk of Gaptank at the base of a terrva block, east side Leonard Mt. PG. 134 8/11/58 Tom Williams showed me around Huecos Hueco Mts. 8/11/58/1 - first road cut, 0.3 miles east of road site cut, west base of Hucco Mts. From a purple band in Madgalena limestone (Penn). 8/11/58/2 - 5' above Powwow conglomerate in slump back along highway 0.2 miles northeast of collection #1. 8/11/58/3 - base of section in next road cut. 0.1 miles east of #2. Also 8/11/58/4 from some interval. 8/11/58/5 - from Upper part Mid Hueco, at or near Thompson's locality T-239 (William's, Hueco Mts - 15 min - W - #10). 8/11/58/6 - Alacran Mt., base of second massive limestone SE side. 8/11/58/7 - Top Deer Mt.-Sh in Upper Hueco - Old Butterfield Trail, near head of Canyon. PG. 135