of 4 ! The ridge of 4.1 - of 4.2. Nino N 65 W. This would make the ridge pass to the south of Racoons Is. land. It is composed entirely of dyke rocks. There were several flows here. Along the northern margin at 4.1. and thence a- lng the northern edge occurs a greenish rutila dense, and leucogenetic rock, which near 4.1 shows perplegotic feldspar crystals and nearer of 4.2. looks like an indurated slate, but I satisfied myself at least that it was not a slate but only the same perplagitic rock with no perplagitic crystals. Along of 4.2. the centre and southern side of this border is a rime purplish rock, among dacoidal often densely filled with small dark streaks, which I suppose are chloritic amygdules. ofen filled with larger, often 1/4 in diameter, amygdulites, which consist chiefly of quartz or first chlorite with an outside of quartz, or lime crust, or chlorite or serp- tinite? the last two in smaller amygdulae. No sedimentary rocks, either slate or Everglan erate were seen here by me At the eastern end of this part of the rock, Rock Island Head I saw no conglomerates or slates although I notice only for some reason other marks in con glomerates. I was then anewere at low tide. 4 43 Coarse reddish conglomerate rims as a ridge to of 4.4 which ridge has no slate, or sandstone to a- ny great arm unit. Almost entirely conglomer- ate, of variable coarseness N 65 W to N 75 W. The cleavage seams dip southward. I am not certain that the strike is south ward although I presume it is about 70 S. The rocks at least dip at a high angle, since the stratifi- cation often climb not they plainly in the conglomerate, which I think would not be the case in more horizontal strata. Along the southern side, a little east of the centre of this ridge is the greenish diabase which jects into the con glomerate in tongue. This ridge lies south of the diabase rise 1-2, at least 50 feet.