i9o8] BRIEFER ARTICLES 271 



THE TOXIC ACTION OF CERTAIN ORGANIC PLANT 



CONSTITUENTS.— A CORRECTION 



The Editors regret that in the article by Schreiner and Reed in tlie 



February number of this journal, vol. 45, pages 80 and 90, figures 2 and d, 

 illustrating the action of cholin and of cumarin, were interchanged. All 

 of the figures appear without legends. These have now been supplied by 

 the authors and are as follows: 



■ Fig. I, — Wheat grown in: (i) Freshly prepared solution of lyrosin, t6 parts 

 per million; (2) discolored solution of tyrosin, originally containing 16 parts per 

 million. 



Fig. 2.— (Applies to block printed as f^g. 6, p. 90.) Wheat grown in: (i) Control 

 in pure distilled water; (2) solution of cholin, 1000 parts per million; (3) 500 parts; 

 (4) 100 parts; (5) 25 parts; (6) 5 parts; (7) i part. 



Fig. 3.— Wheat grown in: (i) Solution of pyrocatcchin, 1000 parts per million; 

 (2) 500 parts; (3) 100 parts; (4) 25 parts; (5) i part; (6) control in pure distilled 

 w^ater. 



Fig. 4.— Wheat grown in: (i) Solution of phenol, 250 parts per million; (2) 

 resorcin, 250 parts; (3) phloroglucin, 250 parts; (4) phenol, 100 parts; (5) resorcin, 

 100 parts; (6) phloroglucin, 100 parts. 



Fig. 5.— Wheat grown in: (i) Solution of vaniUin. 1000 parts per million; (2) 

 500 parts; (3) 100 parts; (4) 25 parts; (5) i part; (6) control in pure distilled water. 



Fig 6.— (Applies to block printed as fig. 2, p. 80.) Wheat grovs-n in: (i) Control 

 in pure distilled water; (2) solution of cumarin, i part per million; (3) 25 parts; (4) 

 So parts. 



Fig. 7.— Wheat grown in: (i) Solution of esculin, 1000 parts per milhon; (2) 

 500 parts; (3) 100 parts; (4) 25 parts; (5) i part; (6) control in pure distilled water. 



