SUR L'ÉTABLISSEMENT DES ARCHES DE PONT. 807 
TABLE I. 
2 
VALEURS APPROCHÉES DE ri (Arches incomplètes, dites en arc de cercle.) 
Y 
n 
13,7111 15,0267| _ 16,3398 17,6512 18,9610 
13,7638 15,0844 16,4026| . 177190 19,0338 
13,8165 15,1422 16,4656 17,7870 19,1068 
13,8694 15,2002 16,5286 17,850 19,1800 
13,9223 19,2582 16,5g17 17,9292 19,2533 
13,9794 15,3164 À 16,6549 17:99:16 19,3267 
14,0286 195,3747 16,7183 18,0601 19,4003 
14,0818 15,4331 16,7819 18,1287 19,474 
14,1352 15,4916 16,8455 18,1975 19,5480 
14,1887 15,5503 16,9093 18,2664 19,6220 
14,2423| _ 15,6090 16,9732 " [18,3354| . 19,6962 
14,2960 15,6679 170372 18,4046 197709 
14,3498 15,7268 17,1014 18,4739 19,8449 
14,4037 19,7859 171656 18,5434 19,9195 
14,4577 15,845: 17,2300 18,6130 10,9943 
14,5118 15,9044 17,2945 18,6827 20,0692 
14,5660 15,9639 173992 18,7025 20,1442 
14,6204 16,0235 | | 17,4240 18,8225 20,2194 
14,6748 16,0831 17,4889 18,8926 20,2948 
14,7294 16,1429| 17,9539 18,9629 20,3703 
14,7840 16,2028 17,6191 19,0333 20,459 
14,8388 16,2629 17,6844 19,1039 20,5216 
14,8936 16,3230 17,7498 19,1745 20,5979 
14,9486 16,3832 17,8153 19,2453 20,6736 
15,0036 16,4436 17,8809 19,3162 20,7498 
15,0588 16,5041 17,9467 19,9873 20,8262 
15,1141 16,5647 18,0126 19,4585 20,9027 
15,1695 16,6254| . 18,0786 19,5 298 20,9793 
15,2250 16,6862 18,1448 19,6013 21,0961 
15,2806 16,7472 18,2111 19,6729 21,1330 
:15,3363 16,8082 18,2775 19,7446 ET 
