On the Ordovician are precisely unconformably lies the Carboniferous limit of the Madron age. This is all that can be seen in the Camp at the point of observation. On the way back to camp I ascended one of the highest Tertiary hills and looked back towards the Camp. This view shows a regular succession beginning on the left with the granites and passing to the right through Cambrian, Ordovician, Car., Trias, Jura, and some Rautin. All of these strata have a very uniform dip to the right and are outlined both in the foreground and in the distance by Tertiary Lake deposits. I have sketched this view and have sketches as seen from a high Tertiary hill between camp and the Camp. In the evening those talks with various mem- bbers. Mr Lawson tells me the granite has joints after exposure to air and shows no decomposition. It had been second class of all its decomposed and. Over this lies the so-called Cambrian bed, at the base, coarse conglomerate from towns