38 the angle included between the dike and a " long to 69°. The dike shows 6 feet of width with the eastern limit embankment. A hand specimen in 1015. The next dike is exposed in a little cliff, which unlike 1014, 1015 shows above high tide. 1016 represents a dike (1/3 of the sketch) which strikes N. 19° W. It appears pretty the same as the dike 1015 (1/2 of the section) of width. It is a continuation. It may be fifteen feet wide. A yard or two to the west of 1016, there is another dike a few one, 1017, which weathers nearly black. This dike (1/2 of the section) is two and a half feet wide & is separated from it by several lakes & shakes with an occasional lingula. The strike of the dike is N. 4° W. 1016 distinctly cuts across 1017 on the gravelly beach, as is indicated in the figure. Following the shore eastwardly, in the little cove in the western part of 3:44.5; between the face and the rock ledges mapped, (just west of the latter) the shales are crumpled and turned on edge - strike N. 85° W., dip 60° degrees, 3° E. of North. The cause of the crumpling is apparently the intrusion of a dike of amygdaloidal diabase with calcareous amygdulæ, but different in color and the rock is similar superficially to the dike 1012. (see p. 36 top). Beginning at the rock ledges shown in the western part of 3:44.5 and extending eastward for about 1/2 of a mile as far as the rock ledges shown on the western edge of 3:44.9, there is a beautiful section of red shales, red & gray clay beds volcanos shales, gray basins gray flaggy. The rocks are exposed in a shore cliff striking diagonally across the line of strike, which traverses the strata in beautiful sections dipping in a general westward direction. The section begins on the east (the points for section) with an igneous dike resembling the contact phases of the rhyolite. Specimen 1019. This dike is at least 20 feet thick the east limit unknown, the beach from this point eastward being gravelly as far as the large igneous cleft & sea cliff beginning near the east edge of 3:44. 9. To the west of this dike (possibly a flow) there is an enormous bed of volcanic tuff over 6 feet thick, red in the lower half, gray green in the upper half. This in turn is surmounted by a massive vol. canic ash which contains fragments two feet or more in thickness. The strike of this conglomerate ash bed is S. 60° W., dip 36°. In the ensuing section of stratified flaggy etc there occurs several more tuff beds # at the east of the two heavy shore ledges near the western edge of 3:44.9 nearly due north - a couple of degrees to the west from the west extremity of the group of houses shown on the chart. 3:44.5. 3:44.9 39 usually red in color, and with fine network structure; extending interstratified with the shales thin flags, but the tuffs themselves not stratified (stratulate). The dip & strike of these beds is variable. Near the lower third are seen a few thin flags with calcareous concretions. On weathered surfaces these concretions stand out as coarse knobs. Similar beds occur south of the noted streams in 3:44.6 & 3:44.7 (near border line 3: 44.7 and 3:44.1). The strike of the ash bed has already been mentioned as being S. 60° W., dip 38° N. 30° W. Just west of the ash beds the shales dip 37° W. 55°. Strike N. 5½ W. A little farther west in the highly calcareous-concretary shales the strike is S. 45° W., dip 27° N. W. In eastern gart of 3:44.8 occurs a very thick pink rhyolite dike strataing north and south and more than 25 feet wide. It contains large scattered nuclei of opalite nearly half exposed black near the top of these sections into shales & samples of white rock of the dike 1018, occur some Camellibranchia. 3:44.5 on. For details of lower part of section, see p. 45. A pink spume (Quince) also formed in a calcareous mode off lower sound (= 3:44.5 bk., July 6, 1907)