W. A. Davis, A. J. Daish and Gr. C. Hawyer 325 



Mangold Mid-ribs. October llth-12th, 1912. 



Extract evaporated in vacuo and made up to 100 cc. 70 cc. of the 

 100 cc. precipitated by basic lead acetate, filtered and washed to 1 litre 

 = Solution A. 300 cc. of A precipitated by solid NagCO., and made 

 up to 500 cc. = B. 



* In the 11 p.m. analysis 80 cc. (instead of 70 cc.) of original 100 cc. were taken; 

 the solution .4 was treated with solid sodium carbonate and used direct without further 

 dilution. 



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