BY R. T. BAKER. 279 



The whole oil obtained when mixed together had a specific 

 gravity of 1-00105 @ 16° C. 



These determinations were made with a delicate pyknometer, 

 holding about 12 grams. 



Specific rotation.— This was taken in a tube 200 mm. long; 

 using the sodium flame, the oils were found to be dextro-rotatory 

 as follows : — 



First oil — -angle observed 4-22-3 therefore ['^JD-i- 11-137. 

 Second oil „ +22-2 „ [<.] D+ 11-080. 



Third oil „ +22-0 „ [-.] D + 11-000. 



These were then mixed, when the rotation was + 22-1, or a 

 specific rotation [ «] D -f- 1 1 -038. All taken at 16° C. 



Redistillation.— 100 c.c. of the oil were distilled at the ordinary 

 atmospheric pressure with the following results : — Only a few 

 drops had been obtained at 185° C, the mercury then rapidly rose 

 to 204" C, between this and 213° C, 5 per cent, had been obtained. 



Below 213° C* 5 per cent. 



First 

 fraction - 

 collected. 



[ Between 2 1 3 and 2 1 7 ■ 2° C = 7 

 217-2 „ 221-4°C= 8 



221-4 „ 224-6° C= 7 



224-6 „ 226-7° C= 7 



226-7 „ 229-8° C= 7 



229-8 „ 235 °C = 16 



Second | „ 235 „ 240-3° C= 17 



fraction. ) „ 240-3 „ 245-6° C = 11 



Third I 



fraction. ( " 



245-6 „ 253 °C = 10 

 Residue boiling above 253 ° C = 5 



Evidently better fractions could be obtained by changing at 

 230° C as 54 per cent, distils between that temjaerature and 

 253° C. 



* These temperatures have beea corrected to the nearest decimal. 



