78 Rules and Tables adapted 
TasBLE—No. I.—continued. 
SLOPES. 
INCLINATION, 
ltol 14 to 1 2 to 1 2: to 1 
=) 
6— 0 1118 1°187 1:266 1°356 
10 17121 1:193 1:276 1-370 
20 1:125 1:199 1°285 1:384 
30 1:129 1:205 1°295 1:°398 
40 1'132 1:212 1°305 1°4138 
50 1136 1:219 1°315 1°498 ° 
7— 0 1'140 1°226 1°325 1-443 
10 1148 1:232 1°335 1-458 
20 1°147 1:239 1°345 1-474 
30 1151 1:246 1°356 1-491 
40 1:155 1:253 1°367 1:508 
50 1°159 1:260 1:378 1:525 
8— 0O 1°163 1:267 1°390 15542 
10 1:167 1:274 1°402 1:550 
20 1:171 1:281 1414 1:578 
30 1:175 1:288 1°426 1:597 
40 1:179 1°296 1438 1-616 
50 1:183 1°304 1°451 1:6325 
9— 0 1°188 1°312 1°464 1:655 
10 1:192 1°319 1°477 1:675 
20 1°196 1°327 1°490 1:696 
30 1:200 1°335 1°503 1:718 
40 1-204 1°343 1°517 1-741 
50 1-209 1°351 1°531 1:764 
10— O 1-214 1°359 1°545 1-788 
10 1-218 1:367 1°559 1:81:13 
20 1-222 1:376 1°574 1:839 
30 1-226 1°385 1°589 1-865 
40 1:231 1°394 1°604 1:892 
50 1-236 1.403 1690 1:919 
lil— O 1:241 1°412 1°636 1:947 
10 1-245 1:421 1°652 1:976 
20 1:250 1°430 1°669 2-006 
30 1:255 1'4389 1°686 9°037 
40 1-260 1°448 1°704 2°069 
50 1:265 1°458 1°722 2°102 
12— O 1:270 1°468 1°740 2°136 
10 1:275 1°478 1°759 2-171 
20 1-280 1'488 1779 2°207 . 
30 1:285 1°498 1:799 2°244 
40 1:290 1'508 1°819 2:283 
50 1295 1519 1°840 2°323 
