Period in Northeastern America. 317 
and estimates made bY Mr. Matthew, and to be regarded as 
merely approximate.' 
Carboniferous System, 
Feet. 
Coarse red conglomerate, with pebbles of the underlying rocks, 
ae constituting in this vicinity the base of the Carboniferous 
stem. 
Devonian System (or perhaps, in part, Upper Silurian). 
1, Dark-red and oun weet laggy sandstones and grits; 
coarse angular conglome - 1850 
2. Reddish conglomerate, ah quartz cebtbee: ssideh, purples 
and grey sandstones and rill ‘Aig Babi gray, and pale-green 
shales, A few fossil plan an6e 
3, Blackish and gray hard shale and arenaceous shale} bu ff aa 
gray At ae and ~— re fossil pias Crustaceans and 
Spirorbis, - - 2000 
4. Reddish isdiplomerate, “with ‘daly panto and’ rounded pebbles; 
trappean or tufaceous rock; red, paps and Fi Seas cnnahvortee 
and shales, Thickness variable, - 1000 
5. eae Papyraceous _ with layers of cone-in-cone concre- 
3 
6. Ps d, ‘generally coarse jaye micaceous, » Bray slintes sik flange ae 
various shades of color, and wit reddish shale and tufa- 
ceous or trappean matter at rate lego: ns, burrows, 
and trails of animals, 0 feet or more. 
7. White and gray crystalline limestone, with fiends ~ ale an 
beds of graphite 600 feet or more. 
8. Gneissose and ie metamorphic beds with: bands of quartz- 
rock and slate. Thickness u 
The Devonian age of . shen members of this great series 
of beds I regard as established by their fossils,"* taken in con- 
hection with the unconformable superposition of the Lower Car- 
boniferous conglomerate. The age of the lower members is less 
in. They may either represent the Middle and pide De- 
Vonian, or may be in part of Silurian age. Their only determina- 
ble fossil, the Lingula of the St. John shales, affords no decisive 
* Tn my i te in the Canadian Naturalist, I gave a sectional view of the gen- 
eral a ent, as observed on a line of section from the Kennebeckasis River to 
se extremity of the peninsula on which St. John stands. The, sections referred to 
In the text represent the ries, on the east side of Courtney Bay, 
ae immediately to oe east of St. so “oho, ith the paeaton ascertained by Mr. ; 
thew towards a 
* The panne animal ienseine of the plant-beds No. 3 aecord very well with the 
evidence of the fossil plants. They are a pie Trilobite, apparently a Phillipsia, 
St rus, ra Luryp- 
genus, 
staceans are now in the hands of Mr. Salter. (See his paper on these 
fossils, read before the Geological Society, May 21, 1862.) There is also a shell, 
*pparently a ema, and irorbis, 
Am. Jour. Scr.—Seconp Serres, Vou. XXXV, No. 105.—Mar, 1963. 
41 
