SUR L'ÉTABLISSEMENT DES ARCHES DE PONT. 809 
TABLE I. 
2 
VALEURS APPROCHÉES DE FF (Arches incomplètes, dites en arc de cercle.) 
LE 9 RE po | 4 6, LR nr 
7 , F: , F , F , 
SISe 
Difr. Diff. Dif, Dif. Dir. 
5,30 || 15,3363 16,8082| — |18,2775 19,7446 21,2101 
16,8694 18,3440 19,8165 7e va 
5,32 || 15,4480 16,9306 18,4107 19,8885 21,3647 
5,33 || 15,5040 16,9920| . 18,4774 ñ 19,9607 21,4422 
5,34 || 15,5601 17,036 18,5443 20,0330 ’ 21,5199 
5,35 || 15,6163 à 17,1153 18,6113 FAT 21,9977 
5,36 || 15,6727 17,1770 18,6785 20,1780| * | 21,657 
5,37 || 15,7291 17,2389 18,7458 20,2507 21,7538 
5,38 || 15,7856 17,9008 18,8132 20,3235 21,8320 
5,39 || 15,8423 17,9629 18,8807 
18,9484 » 20,4695 21,9890 
5,31 || 15,3921 
20,3964 21,9104 
5,40. 15,8990 27,4251 
5,41 || 15,9559 17,4874 
5,42 || 16,0128 17,9499 
5,43 || 16,0699 
5,44 || 16,1270 
19,0162 20,5428 22,0677 
,08 20,616 22,1465 
19,0841 681 0,6162 735 4 ee 
20,6897 22,2255 
20,7633 22,3046 
20,8371 22,3838 
684 3 4 
19,3571 20,9110 155 22,4632 [5 
17,6124 19,1522 
17,6751 19,2204 
5,45 || 16,1843 17,7979 19,2887 
5,46 || 16,2417 17,8008 
5,47 || 16,2992 17,8638 
5,48 || 16,3568 17,9269 19,4942 688 
5,49 || 16,4145 3 17,9902 19,630 21,1336 jh 22,7024 ae 
5,50 || 16,4723| _ 18,0536 19,6319 21,2080 22,7024 
5,51 || 16,5302 i 18,1170 19,7009 21,2826 22,8625 
5,92 || 16,5882 18,1806 19,7701 21,3573 22,9428 
5,53 || 16,6463 ne 18,2443 630 19,8394 69 21,432 ia 23,0232 AE 
5,54 || 16,704@ : 18,3082 19,9088 21,5072 23,1038 
5,55 || 16,7629 18,3721 19,9784 21,9824 23,1845 
5,56 || 16,8213 18,4362 20,0481 21,6576 23,2654 
5,57 || 16,8799 2 18,5004 20,1178 21,7330 23,3464 
5,58 || 16,9385 =: 18,5646 20,1877 21,8085 23,4276 
5,59 || 16,9972 = 18,6290 20,257 21,884: 23,5089 
89 1 ———| 645 | 502 |" | 559 1 ©) 8,4 
5,60 || 17,0561 e 18,6935 ; 20,3280 ; 21,9601 ane 23,5903 
19,4256 20,9851 22,5428 
21,0593 22,6225 
SAVANTS ÉTRANGERS. — XII. 102 
