STRATIGRAPHICAL ORDER. 57 
This section is of special value, inasmuch as it shows a character- 
istic development of the Upper Freeport horizon. It seems probable 
that the yellow limestone above the clay represents the Upper Freeport 
coal. These buff limestones frequently come in upon the horizons of 
the coal seams, apparently replacing them. ‘The clay is the non-plastic, 
greenish fire-clay, so characteristic of the horizon. It has been worked 
here in years past, the brick made from it having a good reputation. 
The clay takes its name from Bolivar, Pa., where it has long been mined 
and worked. The limestone below is in all respects characteristic Upper 
Freeport limestone. 
The Island Siding Brick Works, a short distance below Brown’s 
Station, are working a clay and shale that comes from above the upper 
limestone, but they have also used the hard clay between the limestones. 
The chief objection to this clay is that nuggets of limestone occur in it 
which can be kept out of the worked product only by great care. 
Crossing the river from Toronto, we find on the West Virginia 
side the same general section that we have been following. 
At Freeman and Co.’s Works, the following section was obtained : 
iheebrushu@reekscoala Groihuvelmoencree-ce ear aettanes cadets rte 3 6" 
SoPPIMLS EVA ec «talent alates seen itevacee sudamaenarsccesnereesteteee ea reik steaks 51’ 
3. Limestone, in place of Upper Freeport coal (?)........... CR. 2 
Aas Al ess WAth Oren Wall Siac sce cco.cumoucscieevestcinseseewevsewes secede caseues aces 3! 
D WEMATETHS Gleny CBolbNVENe ))\o00500093000500000809000000 9000000000805000006 6’ 
6. Shale and sandrock, Upper Freeport...............c.cesscescscee coeees 34’ 
7. Lower Freeport coal, Roger Vein .............scsc0sseeee senses sescscees 26 
SoA VPITO=ClBYacccsseesaceas cscs dnctecer otete ce ceils mete nguneliverveuachetece Dileavatce 3! 
9. Sandrock and sandy shale, Lower Freeport. ...........c.cse0. sseees 69’ 
10. Coal, 18” vein or Middle Kittanning ..............2cceceecsecsecseeces 2 
MPEP O=Cl Aivasees cess sestes sescsei eves ees Nes), Cones cesar Nee SAIN UENO IRE TSI wc 2/ 
L2eeSandrockgandishial G.cic./ 05 kee tew tase suceteaeieledesscaece esses desdiess 49/ 
13. Lower Kittanning coal, Clay Vein...............cccsssecscesscesscoees 2/ 
LAGI ttamminerclayamained ups sects eee te masons eecccsedcececoses 6’ 
HEY MConcealedttonrivert tons ..cscsces ccossOove eed eeetades cscs eubanecwsaasiegs 47’ 
At W. B. Freeman’s Clay Works, the Middle Kittanning or Strip 
Vein coal comes in to the section, as follows: 
1. Lower Freeport sandstone, exposed...........cecesecee sosceeees ee 25° 
Coal, 1’ 0 
2. Middle Kittanning coal (Strip Vein) | Sits, Qa sere atiees Qe ate 
Coal, 1’ 6” 
SeMire-claysandiconCealed! ssccies.estiecesstececevscsceacscecdsovessensaecsacees a7 
4. Lower Kittanning coal (Clay Vein)..............c.ccsscessceses seers 2’ 
Bei tlannin 2iClay week aweceseccnaticercerescesesence sivas succdceceectseae' 6’ 
