140 H. G. SMITH. 
Ferric acetate gives a lighter purplish-brown and forms a 
precipitate. 
Ferric chloride added to a portion of the dry substance gives a 
purplish-brown colour. With “eudesmin” this reagent only stains 
the crystals slightly yellow. 
CoMPOSsITION OF AROMADENDRIN. 
Combustion was made of the substance after repeated crystalli- 
zation from alcohol and water; it was perfectly white, had the 
characteristic felted appearance of this substance when crystal- 
lized from hot water ; it gave the characteristic colour reactions 
perfectly, and melted on the surface of mercury at 216°C. The 
portion taken for combustion was previously heated in air-bath at 
120° C. as the whole of the water is given off at that temperature, 
no further loss being experienced when melted. It was extremely 
light, the quantity taken filling the platinum boat. 
No. 1 "1550 gram. gave °348 gram. CO, 
and 0648 gram. H,O 
equal to 61-233 per cent. Carbon 
4°64 - Hydrogen 
34°122 » Oxygen 
No. 2 "1324 gram. gave *2982 gram. CO, 
and ‘0550 gram. H,O 
equal to 61-4252 per cent. Carbon 
46156 4 Hydrogen 
33°9592 ‘ Oxygen 
Mean of the two combustions— 
61°3291 Carbon 
4:6303 Hydrogen 
34°0406 Oxygen 
From which we may deduce the formula— 
C25 H01. 
