Du Mez—The Galenical Oleoresins. 
997 
Table 16 — Refractive indices of commercial oleoresins. 
Sample 
No. 
1-16. 
1-7. 
Date 
1911 
1912 
1913 
Observer 
Evans 8ons,Lescher &Webb 
Parry. 
Evans Sons,Lescher&Webb 
Southall Bros. & Barclay 
DuMez. 
Harrison & Self. 
Hill. 
1915 
1916 
Evans Sons.Lescher&Webb 
Southall Bros. & Barclay 
Southall Bros. & Barclay 
Source 
Not stated 
England. 
Manila, P. I . . 
United States. 
Germany. 
England.. 
Germany. 
Germany. 
Europe. 
England. 
Europe... 
England. 
Europe.. 
Not stated. 
DuMez. 
Stearns & Co.. 
Lilly & Co. 
Sctuibb & Sons. 
Parke, Davis & Co. 
Refractive 
index 
At 15° C 
1.484 ( 2 ) 
1.485 0) 
1.501 
1.501 
At 20° C 
1.484(0 
1.484(0 
1.487 (i) 
1.488 ( 2 ) 
1.4885 (0 
1 493(0 
At 15° C 
1.507 to 
1.509 
At 20° C 
1.4880 (i) 
1.4840 (i) 
1.5040 
1.5055 
1.5065 
1.5210(?) 
At 25° C 
1.484(D 
1.485 (i) 
1.489 
1.490 
1.490 
1.492 
1.493 
1.494 
At 20° C 
1.4910(8) 
1.4944 
1.4984 
1.5055 
1.5080 
1.5084 
At 40° C 
l,4823 (i) 
1.4869 (i) 
1.4874 (0 
1.4880 
1.4909 
1.4915 ( 2 ) 
1.4920 
1.4922 
1.4925 
1.4935 
1.4940 
1.4945 
1.4960 
1.4965 
1.4980 
1.4985 
1.4988 
1.4990 
1.5006 
1.5025 
1.5036 
At 15° C 
1.500 to 1.51C 
1.495 ( 3 ) 
1.497( 3 ) 
1.499 ( 3 ) 
At 25 s C 
1.4975 
1.5115 
1.4976 
1.4983 
1.5000 
1.5001 
1.5020 
At 25 0 C 
1.4953 (*) 
1.4988 ( 4 ) 
1.4993( 5 ) 
1.4998 
1 Samples adulterated with castor oil. 
2 Samples contained added chlorophyll. 
3 Samples are referred to as being suspicious. 
4 Low in crude filicin content. 
6 Contained unevaporated solvent. 
