Wea. FRI. MARCH 26, 1909 Ther. Wednesday Sep. 26 - 1928 All of the Mininquiri and Milton dol. are very irregular in deposition swelling thick and thin. They give the impression of being reef formations and of local origin and must decidedly vary greatly in appearance and in thickness. The quartzites are even more irregular, and appear to be sand banks of local current action, in and out of the section. The greater thickness of the quartzites first vanish away on either side in from 100 to 300 feet. The Mallet dol. & appear to be more persistent and especially in the upper part of the series. Such beds must originally have been present throughout Milton time since their beds were broken up and the angular pieces embedded in the dol. is characteristic feature of the Milton and which (Mallet) inclusions distinguishes the Milton from the Mallett. The latter has oar inclusions but those are not Mallet.