1227 
I. Dextrogyratory Triethylenediamine-Cobalti-Bromide. 
Solution A contained 0.5720 gram of the hydrated salt to 29.89 
grams of water; the specific gravity at 15° C. was: 1.010. 
Solution B contained 2.3669 grams of the hydrated salt in 
32,56 grams of water; at 15° C the specifie gravity of the solution 
was : 1.035. | 
Solution Cecontained 2.0126 grams of crystallised salt to 31,49 grams 
of water; the specifie weight at 15° C was : 1.026. 
With solution A the limits of exact determination were given for 
the wave-lengths: 6900 A.U. and 5420 A.U. respectively; with 
B and C observation could only satisfactorily take place for wave- 
lengths smaller than 5600 A.U. 
| Observed Rotation | Molar Rotation [7] >< 10—! 
Wave-lengthin es We ike AN eed Nd x 
iat eae ba | BS EN NEE 
| | | | | | 
6750 LOT ENNE eee | 4+ 145.0 br es 4+ 164.7 
6600 aaa ee oe 5.46 185.7 | + 212-4} 2217 
6425 1.95 | 7.84 1.34 264.3 288.6} 306.1 
6265 2.67 | 10.02| 9.44 361.9 | 368.9} 393.7 
6100 3.29 | 12.97| 12.29] 445.9 | 477.5| 512.6 
soio. |= 4.a7 | 16.47 | > 15:30) es | 606.4 | 638.1 
5160 | 559 | 20.77 | 19.85 | 757.7 | 164.7, 827,9 
5595 | 7.89 — | | 1069.4 _ | 
Il. Laevogyratory Triethylenediamine-Cobalti-Bromide. 
Solution A contained 0.5651 gram of crystallised salt in 25,85 grams 
of water; the specific gravity at 15° C. was: 1.011. 
Solution B contained 0.1239 gram of the hydrated salt in 26.08 
grams of water. 
Solution C contained 2.1759 grams of erystallised salt in 30.11 
grams of water; the specific gravity of the solution was 1.0338 at 15° C. 
Solution A allowed the passage of the light between ca. 6900 A.U. 
and 5400 A.U. 
Solution B between 7000 A.U. and 4850 A.U.; solution C between 
6900 A.U. and 5700 A.U. 
