42 BULLETIN 1265, U. S. DEPARTMENT OF AGRICULTURE 
(52) Weibull. G. 
1917. Xagra forsok over forluster av naringsamnen m. m. aom 
forsigga vid kokning av potatis. In K. Landtbr. Akad. 
Handl. och Tidskr., Ar 56. p. 348-351. 
(53) Williams. Katharine I. 
1913. The chemical composition of cooked vegetable foods. In Jour. 
Ind. and Eng. Cliem.. v. 5, p. 653-656. 
(54) 1916. Losses and other chemical changes in boiling vegetables, In 
Chem. News., v. 113, p. 145-147. 
(55) Willstattee. Richabi). and Stole. Arthur. 
1913. Untersuchungen fiber Chlorophyll . . . viii, 424 p.. 16 fig.. 11 
pi. Berlin. Verzeichnis ... p. 418-419. Bibliographical 
footnotes. 
(56) Zschokke, Th. 
1905. Yersuch iiber das Blanchieren von Gemiisen. In Landw. Jahrb. 
Schweiz, Jahrg. 19, p. 619-620. ( Ber. Schweiz. Versuchs- 
anst. Obst-, Wein- u. Gartenbau Wadenswil, Jahre 1903-4.) 
