I. RESEARCH. 



487 



12. Argentic ethyl-crotonate C 6 H 9 AgO 2 or {cOAgo* 



13. Ethylic ethyl-crotonate C 8 H 14 O 2 or | cOEto ' 



f CEf'Et 



14. Cupric ethyl-crotonate 



C 12 H 13 Cu0 4 



15. Plumbic ethyl-crotonate C 12 H 18 Pb0 



cEfEt 

 f CEf'Et 



4 Q. 



\ CEf'Et 



2536. Specimens of Chemicals, illustrating some of W. H. 

 Perkin's researches in organic chemistry. 



W. H. Perkin, F.R.S. 



I. On the action of chloride of cyanogen on naphthylamine. 



II. On the action of bromine on acetic acid and artificial forma- 

 tion of glycocol. (Perkin and Duppa.) 



III. On the action of .bromine on bromacetic acid. 



(Perkin and Duppa.) 



IV. On dibromosuccinic acid, and the artificial production of 

 tartaric acid. (Perkin and Duppa.) 



V. On azodinaphthyldiamin. (Perkin and Church.) 



VI. On mauve or aniline purple. 



VII. On the basicity of tartaric acid. 



VIII. On some derivatives of the hydride of salicyl. 



IX. On the action of acetic anhydride on the hydride of salicyl. 



X. On the artificial production of coumarin and its homologues. 



XI. On some new derivatives of coumarin. 



XII. On chlorinated chloride of methyl. 



XIII. On some derivatives of anthracene. 



XIV. On artificial alizarin. 



XV. On bromo-alizarin. 



XVI. On. nitro-alizarin. 



XVII. On anthrapurpurin. 



XVIII. On anthraflavic acid. 



XIX. On the formation of anthrapurpurin. 



XX. On glyoxylic acid. 



I. 



Menaphthylamine (carbodinaphthyltriainine) C^H^Ng, product of the 

 action of chloride of cyanogen on naphthylamine C 10 H g N. 



