ERKATA. 



Page 162, line 21, for "cupric hydrate ; ' read "cupric sulphate." 



,, 163, ,, 21, ,, ,, ,, ,, 



, , loo, , , -, , , ,, , , , , 



230, 34, for " C 5 H 9 (NH 2 )COOH" read " C 5 H 9 (NH 2 ) 2 COOH." 



230, 37, for "cystin" read "cystein." 



*J<}1, ,, 4r, ,, ,, ,, 



,, 231, under formula, ,, ,, ,, 



,, 236, line 30, for "invertine" read " invertase." 



,, 250, ,, 2 of footnote, for " hypobromide " read " hyp jbromite. " 



,, 255, formula for Purin should be 



2 HC 8 C-'NH 

 || || 9 ^ 8H - 



Page 400, line 17, for "only about 0'2" read "that of the." 

 424, ,, 31, for "glycogen with sugar" read "glycogen into sugar." 



