in Optically Active Solvents. 
29 
Thus ’407 gram, of d camphoroxime in 7'5 c.c. of amyl bromide 
gave ol d in a 1 decimetre tube = + 1'58°. 
Subtracting 4’6 0 we get — 302° as the rotatory power of the 
solute. 
•407 gram, of l camphoroxime in 7'5 c.c. of amyl bromide gave 
a D in a 1 decimetre tube = 7 - 42°. 
Subtracting 4'6° we get -f 2 - 82° as the rotatory power of the 
solute. 
These differences are small, but well outside the limit of 
experimental error. They were found to be due to the fact 
that 4 - 6° is not the rotatory power of 1 decimetre of the solvent 
containing a solute. a D for a mixture of equal volumes of the 
two solutions above in a 1 decimetre tube was found to be 
4-49°. 
Subtracting this we get — 2‘91° and + 2'93° for the rotatory 
power of d and l camphoroxime respectively. 
Similar experiments were made with the camphoroxiines using 
turpentine as solvent and with the camphors using turpentine and 
amyl bromide as solvents and exactly similar results were ob- 
tained. 
It may therefore be concluded that the solubility and rotatory 
powers of d and l isomerides are identical in an optically active 
as well as in an inactive solvent. 
