woolsey.]  CLAYS    OF    OHIO    VALLEY    IN    PENNSYLVANIA, 
Analyses  of  Lower  KiUanning  clays. 
Si02 
AloO, 
FeO 
TiOo 
CaO 
MgO 
Alkalies 
ILO  (hygroscopic) 
H.20  (combined).. 
Total 
471 
1. 
2. 
3. 
4. 
5. 
Per  cent. 
Per  cent. 
Per  cent. 
Per  cent. 
Per  cent. 
61. 970 
61.  750 
62. 890 
62.260 
66. 610 
22. 940 
23.  660 
21. 490 
23. 890 
18.390 
1.818 
1.930 
1.818 
1.408 
1.964 
1.975 
1.780 
1.825 
1.780 
2.810 
.440 
.455 
.380 
.470 
.490 
.522 
.353 
.  569 
.309 
.547 
1.750 
2. 418 
2. 525 
1.977 
1.079 
1.480 
7.370 
.680 
7. 200 
1.160 
7.580 
}      7. 640 
7.495 
100.  265 
100.  226 
100. 237 
99.  734 
99.  385 
Per  cent. 
56.  670 
26. 560 
2. 106 
1.790 
.260 
.277 
3.790 
8.  360 
99.  813 
7. 
8. 
9. 
10. 
11. 
12. 
SiO.> 
Per  cent. 
57. 670 
27. 520 
1.494 
2. 540 
.  380 
.  122 
.619 
9.680 
Per  cent. 
60. 190 
24.230 
2. 097 
2. 345 
.850 
.036 
1.669 
9.015 
Per  cent. 
61. 980 
23. 880 
1.395 
1.830 
.040 
.281 
f      1.217 
1      1. 460 
7. 820 
Per  cent. 
68.92 
22. 38 
.980 
Per  cent. 
56.37 
29.62 
a  1.14 
Per  cent. 
60  30 
ALOf 
24. 12 
FeO 
1.46 
TiO.> 
1.20 
CaO  . .            
.19 
.172 
I 
.45 
.14 
1.08 
1.92 
8.71 
.59 
MgO                 
68 
2.42 
J 
6.14 
86 
H.>0  (combined) 
7.77 

Total 
100.  025 
100. 432 
99. 903 
99.  962 
99.43 
99  40 
«  As  sesquioxide. 
1-4.  From  Elverson  &  Sherwood's  mines,  near  New  Brighton,  Beaver  County,  being,  respectively, 
first,  second,  and  third  grades  of  clay  and  the  raw  clay.  Analyses  by  David  McCreath.  Second 
Pennsylvania  Geological  Survey,  Rept.  MM,  p.  262. 
5.  Mendenhall  and  Chamberlin  mines,  near  New  Brighton,  Beaver  County.  Analyses  by 
McCreath.    Ibid. 
6.  Coale's  clay,  near  New  Brighton,  Beaver  County.     Analyses  by  McCreath.     Ibid. 
7.  Couch's  clay,  New  Brighton,  Beaver  County.     Ibid. 
8.  Severn's  clay  mines,  near  Vanporte,  on  Ohio  River,  New  Brighton  Township,  Beaver  County. 
Ibid. 
9.  S.  Barnes  &  Co.'s  clay,  Bridgewater,  1  mile  north  of  Rochester,  Beaver  County.     Ibid. 
10.  Brady's  Run  Fire  Brick  Company,  Beaver  County,  Mineral  Resources,  United  States,  1896, 
Eighteenth  Ann.  Rept.  IT.  S.  Geol.  Survey,  pt.  5  (continued),  p.  1155. 
11.  Flint  clays  from  Mineral  Point;  analyses  by  Lord.    Geol.  Survey,  Ohio,  vol.  7,  p.  221. 
12.  Yellow  ware  clay,  East  Liverpool;  analyses  by  E.  Orton,  jr.    Geol.  Survey,  Ohio,  vol.  7,  p.  119. 
By  comparing  the  analyses  of  Beaver  County  cktys  with  those  of 
clays  of  the  same  horizon  in  Ohio  their  similarity  becomes  evident. 
The  Lower  Kittanning  bed  in  Ohio  is  used  for  the  finer  pottery 
manufactories,  for  saggers,  also  in  part  for  the  manufacture  of  yellow 
and  Rockingham  ware,  and  even  for  stoneware;  besides  sewer  pipe, 
fire,  building,  and  paving  brick." 
In  a  similar  manner  the  Lower  Kittanning  clay  of  Beaver  County 
supplies  all  the  potteries  and  hollow- ware,  fire-brick,  and  paving-brick 
factories  at  New  Brighton  and  the  brickyards  south  of  that  place  on 
"Orton,  Geol.  Surv.  Ohio,  vol.  7,  p.  47. 
