Perth 3 February 1871
Specific Gravity of Gums –
Arabic fromR & J. Henderson ¼ lb. to 1 pint water imperial measure stands(??) 66
Senegal in use same proportions 63
Brown Barbary from Woodward in use. Proportions as above 64
Gedda in use proportions as above 67
28 March 1872
Senegal from J. Laing Son & Co. London ¼ lb. to imperial pint cold water specific gravity 65½
April 1872
Barbary from
¼ lb. to Imperial pint cold water Specific Gravity 60½