VIII. B, 6 



DuMez: Oleoresin of Aspidium 

 Table IX. 



535 



Extract. 



Crude 

 iilicin. 



1 

 Iodine ^^Xn" 



Ash. 



Ether 



Per cent. 

 20.37 

 13.79 



99.8 

 96.3 



229.3 

 208.5 



Per cent. 

 0.48 

 .63 



Acetone 









PHYSICAL AND CHEMICAL CONSTANTS OF COMMERCIAL EXTRACTS 

 AS DETERMINED IN THE LABORATORY 



The commercial extracts were purchased in different countries 

 and subjected to the same tests as the genuine extracts prepared 

 in the laboratory. Their properties are shown in Tables X, XI, 

 and XII. 



Table X. 



Sample 

 No. 



Color. 



Deep green 



Brownish green . 



do 



do 



do 



do 



do 



do 



Specific 



grravity, 



26°. 



1.0079 

 1.0085 

 1.003 

 1.0028 

 1.0012 

 .9889 

 .9855 

 .9773 



Refrac- 

 tive in- 

 dex, 16°. 



1.490 

 1.494 

 1.493 

 1.492 

 1.490 

 1.485 

 1.484 

 1.489 



Source. 



United States. 



Germany. 



England. 



Germany. 



United States. 



England. 



Do. 

 Manila, P. I. 



Table XI. 



Solubility in- 



Sample 

 No. 



Ether. 



Acetone. 



Two volumes of 

 petroleum ether. 



Three volumes of 

 90 per cent alcohol. 



One volume of 

 glacial acetic ' 

 acid. i 



1 

 2 

 3 



4 

 6 

 6 



7 

 8 



Soluble 



Partially soluble 

 do 





Oil separates 



do - 



Oil separates. 

 Do. 



do.- 



do 



Partial sepa- 

 ration. 

 Mixes.. 



do 



do .-- 



Partial separa- 



do 



do 



tion. 



Oil separates Oil separates. 



do Do. 



Partial separa- Mixes. 

 tion. 



do Do. 



Oil separates Oil senarates. 



do 



do 



do 



Partial sepa- 

 ration. 



do 



Mixes 



do 



do 



... do 



do ... 



do 



do 











1 



