Nearly ½ mi's of road E from 919, near the house, top of Brassfield rises to at least 911 U.S.G. One mile S of road corner 919, and dear ½ mi SE of Ginghamsburg, the road falls going southward. Along the east branch, going south, Brassfield rises to at least 20 ft above the fork of the road = about 905 ft., not very exact since I do not know levely road forks. From Vandalia 1½ mi E, then 1 mi N to small stream. Top of Brassfield E of road = 905 U.S.G. Dayton here represented by about 7 feet of whitish thin bedded stuff, very thin bedded toward top and weathering spalling. Above this is 2 ft. of sparkling argillaceous indurated sand which may represent the base line. Of not, this 2 ft part is merely the top of the Dayton section. Sunderland Falls. Top of Brassfield = 906 exact. Brassfield at least 22 ft thick Road level. 7 ft interval. 920? 7 ft fairly well bedded L = Laurel? 3 or 4 ft argillaceous indurated sand, good, 7 or 8 ft of Dayton, some cracked at base, partly exposed toward top < 905? At least 15 ft. of Brassfield, none seen. -drawn sketch. 30-50 + North of Chambersburg 3 mi., E ½ mi. Top of actual exposure of Brassfield = 900 ft. but there is no actual contact with the Dayton line, nor on any of an exposure to be reasonably come of this day near the top of the Brassfield. From West Charleston N 3/4 mi., then W 3/4 mi. to Mt. Pleasant Cemetery. Top of Brassfield = 900 U.S.G. at least 18 ft. of Brassfield exposed at quarry. Top of probably 2-2½ ft or a little more. Base of Brassfield estimated at 850 about 3 Glacial till S 80 E 200 yds N school at end of West Charleston 2 chemic bank exposed 4 ft deep road level in telegraph post hole at 970