54. ANNUAL REPORT 
Percentages. 
E 3b 3 Molecul We 
: as | ee RETO UH ROE aoe 
2 & a Ors) 2S o6 a : RO:Si0, 
| > SI ame 5,2 =e) 3 S 
s = 5 oO | aa a8 6 5 
Zz oD) <q cs OO to Ay DQ 
1 USO) |) OrtO AsO W GDCO P Bato se eb loos oe MTORR WN Bory 2O) TABS Se 
De NG GoL Gah) Bi 8ts | AOS PAGO boss oe slles osc Meera) 8 dhl) PANS. 8 OS 8 
3 BAO I lee My Aad | GID. UO Nn 6 6 eo olla 6 owe OPS 22 ele ORS Ziel lumens 
4 DBs BY N  CeAO | WeCOL0) IP Skersayee | PRE eo sis s celles So 55 Weta) Sel We so Oey 8 2 
5) Opie 10.43 34.54 | 21.85 3.63 LS I Ho TGA). & OSiae, SO 
6 PHN EO We) ea | DOG S370). I PAD Oe on ba oe careers WsoX0 SIL Wh TheatO) S OLGIL 3 Ae 
7 22.62 | 7.44 | 1.40 | 40.68 | 22.00 Vs, 5 Pe WEEE SOE NL Ae QUO) Saf Se 
8 24.40 6.20 | 41.80 | 16.29 lh O44 Sil 8 Ih 4 Al 8 Oaks? 2 ® 
9 27.60 | 10.60 | 0.80 | 33.04 | 7.26 7.42 0.91 : 1 |0.91:0.68 :2 
10 28.02 | 10.20} 8.80 | 44.48 | 1.00 0.50 LEZ OR arlialal 2 Oh ONG Ame 
11 DTD 7.40 BLOodk |b BDI Io's 5 66 5 [ree a sees Wee SA lke Ss OGG 2, 2 
12 25.16 | 6.33 1.71 | 36.08 | 18.38 5), AAU eater SAL lbheetey S044 8 2 
13 PPA SOM We ees WP WN) WP GL AB | AotW lo ws 6 oe [Rapearcrants Week) Sb AS 7A) SONGS 2 
14 24.74 | 16.74 | 6.380 | 41.80 | 8.60 6.18 ee ce ae ens Ove, 
*The Al.O; includes the Fe,0;, the latter not having been determined. 
Analysis No. 1* represents a Roman cement mined at New Lisbon, 
Ohio, belonging to the Lower Freeport horizon, a hard rock which pro- 
duces a most excellent cement when properly burnt. 
No. 2* is a similar cement rock from Bellaire, Ohio, which is 
mined in the hills below this city. 
No. 3% is a calcareous rock found at Barnesville, Belmont county, 
Ohio, lying between the Pittsburg and Meigs Creek coals, Nos. 5 and 9. 
No. 4 is a hydraulic shale obtained near. Defiance,- Ohio, highly 
charged with bituminous matter and containing distinct layers of pyrites 
which, unless removed by hand picking, interfere seriously with the 
proper burning of the material. The quality of cement produced from 
it, however, is high and it has been used in a great many buildings of 
Auglaize county. 
No. 5 represents the Rosendale cement rock, one of the typical 
American Roman cements. It is chiefly found in Ulster county, New 
York, and is a dark blue, hard rock brought to the surface by upheavals 
and is hence tilted in every conceivable inclination. It is obtained by 
mining. 
No. 6 is an average analysis of several Rosendale Roman cements. 
No. 7 represents the Akron cement, of the type of the Rosendale 
- Roman cement and mined at Akron, New York. 
No. 8* is an analysis of another well-known American Roman cement, 
being mined and burnt within a small area along the Ohio river extending > 
about fifteen miles north of it near Louisville, Ky., being known on the 
market as Louisville cement. 
*Ohio Geological Survey, Vol. VI, Chapter on Cements, by Prof. N. W. Lord, p. 673. 
