MYRSINEA. eee 353 
. per cent. of lead, respectively, which gives a mean percentage of 
_ 87-795 as the lead content of the salt. Taking the lead salt to 
be represented by the formula (C®°H¥O?)?Pb”, its theoretical 
_. 
: ‘Two analyses of the lead salt afforded 37-781 and 37-810 
: 
: 
: percentage composition would be— 
Carbon 43°1 54, 
Hydrogen vow BOTH 
Lead ‘ 40°282 
Oxygen 12°490 
ahits the actual percentage as determined by analysis gave 
the following figures :— 
Carbone wae. in 43°545 
Hyd eopency 5°824 
Lead + 37°795 
Oxygen : 12°836 
_Acomparison of the theoretical and found percentages for 
the silver and lead salts indicates differences which can only 
be accounted for by assuming that the salts were partially 
~ decomposed during preparation. 
. - Embelic acid was found to have a melting point of 1389°5° C. 
oe 140° C. (uncorrected), when it forms a deep ruby liquid. 
At about 155° C. it commences to decompose ; indications of 
& portion having sublimed were noted. 
The following colour reactions were obtained by adding 
the respective re-agents to dilute alcoholic solutions of the 
acid :— 
Ferric chloride, a dirty brownish-red colour. 
Ferrous sulphate, brownish colour. 
Chloride of zinc, violet colour. 
