104 



HEPORT— 1902. 



Pyrogallol. — A specimen of pyrogallol obtained from Schuchardt was 

 purified by ciystallisation. lb melted at 132-134°. It was photo- 

 graphed in aqueous solution, and gave spectra very similar to those of 

 phloroglucinol ; the amount of general absorption is slightly greater ; the 

 absorption band, which occupies the same position, is somewhat narrower, 

 and dies out at the same degree of dilution as in the case of phloro- 

 glucinol. 



Phenol. — The specimen employed was prepared from the purest sali- 

 cylic acid by distillation with lime, B.P. 182°. The salicylic acid, 

 ' physiologically pure,' was kindly presented for the purpose of this inves- 

 tigation by Messrs. Burgoyne, Burbidges, and Co. It has been shown by 

 Hartley ' that the natural salicylic acid, and that prepared by Klobe's pro- 

 cess but purified by recrystallising the calcium salt and separating the 

 acid, are identical in physical and chemical properties. 



PHLOEOGLUCINOt. 



C,H3(OH)3 [1:3: 5]. M.P. 210-217°. 

 Prepared from resorcin and purified by Skraup's method. 



» Hartley, Cliem. Soc. Trans., 1888, 63, 664, 



