This is the origin of the Peraductus [illegible] part. Henderson Rhyn. Shipton, Camano, Loriana. 8. Cameos from down to quarry floor. 6 feet 9. Quarry floor with Archimedes. At least 3 feet thick. Zone 1 is unquestionably Pennsylvanian. Between zones 1 and 2 there are [illegible] cap that is an unconformity because at Hautr a limestone comes in with the true Monms fauna. Beneath zone 2 there is an unmistakable erosional unem- conformity. It is plainly to be seen. Freya also calls it an unconformit All the zones from 2 to 9 both inclusive Freya regards as high Tennesseean. He tells me that all of these zones are included by Snider in the Monms, and that Mathis has included all the finds for those beds in his Monms fauna. Beneath the quarry is Snider's Mages formation of about Kerkhuk age. There is therefore a big break between the Mages and the Kergh quarry. It is this unconformity that are 1 the Fayetteville etc, wedges in. At the top of no 3 occur the fries Hartois, many Oich- elinium, Glyptostoma and most of the byzora. The loose Archimedes Chorates etc come from zone Nos 5 and 6. The fine Eupachyscissium and other loose forms come from zones 5 and 6.