APPENDIX. 687 



rocks near Qiiaco, showing that the lower part of this series in that region 

 consists of red syenite, felsite, and granulite, not heretofore recognised as 

 sedimentary rocks, and that the full series will be as follows, in descending 

 order : — - 



Red sediments of comparatively small thickness (No. 5 of Mr Matthew's 



paper on these rocks). 

 Dark-coloured trap-slate rocks of great thickness, parted about midway 

 by a rusty-coloured calcareo-arenaceous band charged with iron and 

 manganese (Nos. 2, 3, 4, of paper cited). 

 Red felspathic rocks of great thickness resting on the Laurentian 



series. 

 Mr Matthew suggests the possibility that the red felspathic rocks in the 

 great Lower Silurian band of Northern New Brunswick, marked on the 

 map as eruptive rocks, may be really representatives of these Huronian 

 beds rising from below the Silurian. 



Mr Matthew has also recognised in the Huronian of New Brunswick 

 concretions similar to the bodies from the " Lower Taconic " of North 

 Carolina, described by Emmons under the name of Palceotrochis. 



(M.) Lower Carboniferous of Southern New Brunswick. 



Mr G. F. Matthew has communicated to me the following sectional hst 

 of the lower Carboniferous beds in Eastern King's County, New Brunswick, 

 m descending order : — 



8. Reddish-brown arenaceous shales and red sandstone. 



7. Upper conglomerate (Kennebeckasis conglomerate), hard and massive 



beds. 

 6. Bright red sandstone and brownish-red shales and sandstones (brine 



springs rise from these beds). 

 5. Gray sandstones, flags, and dark gray shales (bituminous), Cyclopteris 



Acadica and Lejndodendron corritgatum. 

 4. Conglomei'ate, limestone, gypsum, and dark gray shales (bituminous), 



7'erehratula suffiata, etc., Cyclopteris Acadica, Lepidodendron coi'- 



i-ugatum. 

 3. Lower conglomerate, hard and massive beds. 

 2. Break in section (probably shales). 

 1. Basal conglomerate. 



These beds vary considerably in tracing their line of outcrop. More 

 especially the lower members thin out toward the west, where the Lower 

 Carboniferous bay terminates between the spurs of older rocks, while in 

 the same part of the area the upper members become increased in thick- 

 ness. Toward the wider Carboniferous area on the east, some of these 

 upper members are reduced or change in character. 



