sequence. The Incauth coylo on the Georgia Center road is the peatlar rock mass to be seen anywhere. Everywhere the coyent is a sandy dol, and in places where the cipatters are absent there are strata of sandy dol. But one is apt to mistake for the Driltm sticking through the Higgate. This in places is un- doubtedly the case, but in several places one could trace the li. coylo family into solid reddish sandy dolomite. Part of one than 3/4 of the Incauth is made up of the Thin Reddedl Ordovis- guri, along with parts face signs of the white skeltonic marbles. Saw me Hrokl 15'x5'x 3 fot thick. Another Hrokl was 18'x 5'fat. Another Hrokl about 10 fot airon looked exactly like the Prolledge Hrokl having flow structure around chapped dolomite. It is now clear that here at least the Incauth precedes the Higgate and the Driltm. These have genuine formations. What the age of the slates above the coylo is not yet determined.