304 RHAMNELL. 
Calcium oxalate .... 7°43 
Starch ' 7°83 
Modification of arabin sol. in acid...... D'54 
Cellulose 16:17 
Suberin, &c. — 6°38 
Lignin 9°80 
Ash (balance of) 3°39 
Moisture and loss ...... 0°38 
190°00 
The ash gave the following analysis:— 
Insoluble silica : 1:48 
Soluble silica ... 0-18 
Iron and alumina 155 . 
Lime 47°04 
a s. 2-91 : 
Carbonic anhydride 35°52 
Phosphoric anhydride . 1°78 
Sulphuric anhydride 0°68 
aE Es Ge Sy a ae rina trace © 
Alkalies, &c., by difference ............ 8°86 
100-00 
‘Mr. Hooper remarks that the crystalline body found in the 
ethereal extract appeared under the microscope as white 
transparent prisms, and was sparingly soluble in water, ether, 
alcohol, and boiling bisulphide of carbon. When freed from 
_adberent resin, it was not coloured by strong sulphuric acid or 
potash solution, the crystals melted and partly sublimed when 
heated, leaving a deposit of carbon. It had similar reactions 
with the “ crystallizable body ” obtained by Prescott from 
Cascara Sagrada. The light brown resin was soluble in rectified — 
spirit, and gave a fine rose colour with diluted alkalies. When 
heated it melted to a reddish mass, and gave off greenish-yellow 
_ vapour, which sublimed and had similar characters to the 
| eriginal resem. Tt was semi-crystalline when observed under the 
