SUR L'ÉTABLISSEMENT DES ARCHES DE PONT. 
TABLE I. 
O0? 
VALEURS APPROCHÉES DE — (Arches incomplètes, dites en arc de cercle.) 
J CRE DA 9 A 90 CORPS Ep je Yo 
di 1 n J di Ji 
Difr. Dir. Di. Difr. 
5,60 || 17,0561 18,6935 20,3280 21,9601 23,5903 
1 _ [590 ô 646 70 Ê 799 
5,61 171251] 18,7581 20,3983 22,0360 23,6719 
590 648 7oï .761 
5,62 || 17,174 18,8229 20,4687 22,1121 23,7536 
59° 649 705 763 à 
5,63 || 17,2333 18,8878| . 20,5392 22,1884 23,8355 
593 N 650 À 707 763 
5,64 || 17,2926 18,9528| 20,6099 22,2647 23,9176 
594 650 707 765 
5,65 || 17,3520 19,0178| 20,6806 29,341 2 23,9998 
594 652 709 766 
5,66 |[[17,4114| - 19,0830 20,7919 22,4178 24,0821 
296 654 711 768 
5,67 || 17:47:10 19,1484 20,8226 22,4946 24,1646 
297 654 Are 3 769 
5,68 || 17,5307 19,2138| | 20,8938 22,579 24,2472 
598 655 713 770 
5,69 || 17:5905| _ 19:2793| _ | 20,965: 22,6485 24,3299 
— |.599 657 | 714 HN Eee 
5,70 || 17,6504 19,3450| 21,0365 22,72D6 24,4128 
600 658 716 773 
5,71 || 177104 19,4108 21,1081 22,8029 24,h959 
6o1 659 717 779 
5,72 || 17,7705 , 1294767 21,1798 22,8804 24,57091 
603 660 M|\7x18 776 
5,73 || 17,8308 19,9427 21,2516 22,9580 24,6624 
603 | 6G1 719 777 
| 5,74 || 17:89a1 19,6088 21,9235 23,0357 24,7459 
Go4 — 663 —| 720 779 
5,75 || 17,9915| . 19,6751| 21,3955 23,1136 _24,8295 
605 663 722 779 
5,76 ||16,0120| 19,7414 21,4677 23,1915 24,9133 
6o7 665 723 781 
5,77 || 18,0727 19,8079| .. 21,5400 23,2696 24,9972 
| 608 666 724 783 
5,78 || 18,1335 19,874 21,6124 . | 23,3479 25,0813 
608 667 726 784 
5,79 || 18,1943 19,9412 21,6850 23,4263 25,1655 
| 610 668 727 786 
| 5,80 || 18,2553 20,0080 21,7077 23,5049 25,2499 
610 670 728 786 
| 5,81 || 18,3163 20,0750 21,8305 23,5835 25,3344 
K Gi2 671 729 788 
| 5,82 || 18,3775 20,1421 21,9034 23,6623 25,4190 
| 613 672 730 789 
5,83 || 18,4388| 20,2093 21,9764 23,7412 25,5038 
1 À 614 672 732 791 
5,84 || 18,5002 20,2765 22,0496 23,8203 25,5888 
— - Gi4 674 733 791 
| 5,85 || 18,56016 20,3439 22,1229 23,8994 25,6739 
616 | 675 739 793 
5,86 || 18,6232 20,4114 22,1964 _ | 23,9787 25,7591 
617 677 735 795 
5,87 || 18,6849 € 20,4791 È 22,2699 3 24,0582 à 25,8445 
D1c 7 
5,88 ||18,7467 20,5468 77 22,3436 q7 24,1378 73 25,9300 
| 619 -| 679 738 798 
| 5,89 || 13,8086| . 20,6147 22,4174 24,2176 26,0157 
———| 620 679 =| 739 799 
5,90 || 18,8706 20,6826 22,913 2/4,2975 26,1015 
811 
Diff. 
816 
822 
823 
826 
831 
833 
838 
841 
842 
845 
846 
848 
850 
851 
852 
854 
855 
857 
858 
