ABSORPTION SPECTRA. 



PLATE 5. 



.62 .ei .6(1 



||.|,.|||;||.l|,l. 



FIG. 17. 



FIG. 18. 



""'^ 



FIG. 19. 



~r-!MP TTgT ;; ' wmmtTifWr 



FIG. 20. 



FIG. 17. SEE NO. 109. EOSINE A L'ALCOOL. 



FIG. 18. SEE NO. 113. GYANOSINE. 



FIG. 19. SEE NO. 106. ACID ROSAMINE A. 



FIG. 20. SEE NO. 127. NAPHTHALENE RED. 



ELIOTrPe CO., 30ST0N. 



