ERRATA, VOLUME XII 
Page 51, 4th line from top, read officinale for officinalis. 
Page 228, 3d line from bottom, read breeding for breedong. 
Page 256, 3d line from top, read Blakeslee for Blakslee. 
Page 266, 9th line from bottom, read Aconitum for Aconitium. 
Page 268, 7th line from top, capitalize Hydrastis and Berberis. 
Page 276, 4th line from top, read G. H. Shull for G. A. Shull. 
Page 276, 7th line from bottom, read Roland Thaxter for К. B. Thaxter. 
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