ERRATUM 
Vol. xxii. No. 3, p. 137, lines 24 to 28. 
For “Antagonism between_the same method” read “By the same 
method antagonism between sodium acetate and sodium sulphate has 
been shown by Raber (1920 b), but between sodium citrate and a 
number of other sodium salts (chloride, sulphate, nitrate, iodide and 
thiocyanate) the reverse effect, an increasing of toxicity, for which the 
name synergy is suggested, has been observed (Raber, 1917).” 
