Nov. x. igao Composition of Normal and Mottled Citrus Leaves 191 



(12) MuLLER, John. 



1909. yellowing OF citrus TREES. In Agr. Jour. Cape Good Hope, v. 34, 

 no. 2, p. 149-157. 2 %• 



(13) OliviEri, V., and GuErrieri, F. 



1895. ricErche suc-li agrumi. In Staz. Sper. Agr. Ital., v. 28, fasc. 5, p. 

 287-301. 



(14) Palladin, W. 



1892. aschEngEhalt DER ETiolirten blatter. In Ber. Deut. Bot. Gesell., 

 Bd. 10, p. 179-183. 



(15) RownEy, Thomas H., and How, Henry. 



1848. analysis op the ashes op the orange-tree (citrus aurantium). 

 In Mem. and Proc. Chem. Soc. London, v. 3 (1845/48), p. 370-377. 



(16) Weber, Rudolf. 



1875. ueber den einfluss farbigen lichtes auf die assimilation und 

 die damit zusammenhangende vermehrung der aschenbestand- 

 THEiLE in ErbsEn-keimlingEN. In Landw. Vers. Stat., Bd. 18, 



p. 18-48. 



