5> 



DES Sciences; 



PI zzz -f- — ^ ; en prenant k! pour l'excès de k fur — . 



A=i 1,2412, B z=i — 2,2.032, C = -H 1,1548, 



'D=z -\- 0,2404, £■ r=: 0,942 5, i^= -+- o,8po6, 



j5r zzz 0,7062, //zi:z 0,6805. 



III.'' Supposition. 



T = 1,54. P' = i.5?8' '^ = 7- (^)' '^e q^î 



iîoiiiie k' ^zz — . 



A z= 1,2412, B =: — 2,2032, Cr= -1- 1,1737; 



/) z= -H 0,3234; £■=: 0,8527; i^=i::-i-:0,8c;o6,: 



^=zz — 0,6775»; H =zz — 0,61 57. 



I V.' Supposition. 

 'P = 1,54; P' =: 1,55)8; k z= -^ X 1,08; ce qui 



300 75 



y4=: -H- 1,2412; ^ = — 2,2032; C=-H 1,1470; 

 .D = -I- 0,21 11; E ziz: — 0,965)4; F z=i -\- 0,8506; 

 K = — 0,7165; H ■=. — 0,605)9. 



y.'^ Supposition. 



* 



P = 1,55; P' ■=. 1,55)8; k -zzz. ^-; ce qui donne 



an: -t- — , en prenant «, pour l'excès de P fur 1,54. 



^ = -+-1,255)6; ^zi: — 2,2550; Crzr-f- 1,2029; 



^=-+-0,3107; Ez=. 0,8976; i^= -H 0,9048; 



K zzz — 0,7015; H izz; 0,6481; d'où l'on tire 



0,1059 0.57+Î o,o7v8 . . 



^r~ • " -H — ■ — ' zzz. o ; ce qui donne 



- " ^ H i; 



