204 ABSTRACTS OF PaPERS FROM OTHER JOURNALS. 
neutralizing the sulphuric acid solution by carbonate of calcium a 
brown precipitate is obtained, which redissolves in sulphuric acid 
with a purple colour. 
Eveenta Austrauis. De Lucaa Ubaldini (J. Pharm. [4] TI, 
44, Watt’s Dict. Sup. I, 608. 
e red juice of the fruit of the Australian myrtle is similar 
in its properties to that of red grapes. It contains free tartaric 
acid, cream of tartar, sugar, and a red colouring matter very 
its red colour on exposure to the air, like litmus and the red 
colouring matter of wine. 
Tnocarpry. Cuzent. (J. Pharm. XXXV, 241; Watt’s Dict. 
III, 274.) 
red colouring matter. The juice which exudes from incisions in 
the bark of young trees, or the pericarp of green fruits is colour- 
less ; but soon turns red in exposure to the air, and dries up to @ 
793) cum. M.M. Pattison Muir. (J. . Chem. Soc. X¥VE 
