OF ARTS AND SCIENCES. 225 



acid employed was obtained from anthranilic acid by means of the 

 Sandmeyer * reaction, which, as in the case of the metachlor acid 

 above mentioned, we found admirably adapted to our purpose. 



I. Orthobrombt'iizoic Anhydride. 



Crystallizes from ligroine in fine, white, prismatic needles melting 

 at 141°. Readily soluble iu ether and chloroform, less easily in 

 benzol, alcohol, and ligroine. The analyses gave : — 



0.1663 gr. substance gave 0.1615 gr. AgBr. 

 0.1832 gr. gave 0.2928 gr. C0 2 and 0.0390 gr. H 2 0. 



Calculated for 

 CH l (1)Br 



^6^4 {(2) CO 



x O 



/"• Found. 



^ a * 1(1) Br 



C 43.75 43.58 



H 2.09 2.36 



Br 41.67 41.32 



II. Metabrombenzoic Anhydride. 



Crystallizes from benzol in glittering white leaflets melting at 97° 

 Readily soluble in ether and chloroform, less easily in alcohol, benzol, 

 and ligroine. The analyses gave : — 



Found. 



C 43.75 43.50 



H 2.09 2.10 



Br 41.67 41.55 



III. Parabromhenzoic Anhydride. 



Crystallizes from benzol in thick prisms, from chloroform in Bma 

 tablets. Is decidedly more insoluble in the common organic solvent* 

 than either the ortho or the meta isomer. Melting point 212 to 213 

 This body has already been described by Jackson and Rolfe ; f we have 

 therefore considered an analysis unnecessary. 



a 







* Ber. d. ch. G., XVIII. 1495. t These Proceedings, XXII. 260. 



VOL. XXVIII. (n. 8. XX.) 15 



