— 625 — 
Passons aux expériences concernant l’indice de réfraction 
t°. 
r. 
D. 
b. 
V. 
907 
1,44781 
1,45031 
1,45640 
1,46117 
25°4 
1,43931 
1,44178 
1,44781 
1,45248 
43°0 
1,42964 
1,43210 
1,43788 
1,44242 
62°5 
1,41887 
1,42124 
1,42680 
1,43113 
Les solutions donnent : 
Solution L 
n. 
n v . 
n v : n. 
C n- 
t 9°8 
r 
1,37853 
1,38433 
1,00421 
-0,421 
D 
1,38058 
1,38645 
1,00425 
-0,425 
b 
1,38556 
1,39156 
1,00433 
-0,433 
V 
1,38939 
1,39558 
1,00445 
-0.445 
t = 23^8 
r 
1,37094 
1,37686 
1,00432 
-0,432 
D 
1,37294 
1,37891 
1,00435 
-0,435 
b 
1,37784 
1,38393 
1,00442 
-0,442 
V 
1,38182 
1,38804 
1,00450 
-0,450 
t = 39°4 
r 
1,36246 
1,36840 
1,00436 
-0,436 
D 
1,36446 
1,37046 
1,00440 
-0,440 
b 
1,36913 
1,37528 
1,00449 
-0,449 
V 
1,37306 
1,37935 
1,00458 
-0,458 
t = 53°3 
r 
1,35481 
1,36075 
1,00438 
-0,438 
D 
1,35674 
1,36275 
1,00443 
-0,443 
b 
1,36141 
1,36750 
1,00448 
-0,448 
V 
1,36527 
1,37148 
1,00455 
-0,455 
