698 BOTANY 



Pflanzenbiolog. Untersuchungen in Russisch-Lappland, 1891. ( x ) Cf. PFEFFKK, 

 Pfl.-Physiol. 2nd edition, vol. i. 60. BEYERIXCK, Progr. de la soc. holl. des 

 sciences a Harlem, 1904. The results of KOHL, Bi-r. dtscli. Bot. Ges. 1897, Heft 2, 

 that the ratio is 5 : 4, is due to an error in calculation. ( 37 ) EXGELMAXN, Bot. Ztg. 

 1884, 1887, 1888, Verb. Akad. Amst. 1894. REIXKE, Bot. Ztg. 1886. EXGEI..M ANN. 

 Arch. f. Anat. u. Physiol. 1902. GAIDUKOW, Abh. Berl. Akad. d. Wiss., Anhang 

 1902. PAXTAXELLI, Jahrli. f. wiss. Bot. xxxix. 1903. REINKE, Lehrb. f. wiss. Bot. 

 x. 1876. MOLISCH, Bot. Ztg. Ixiii. 1905, i. Abt. TSWETT, Bot. Ztg. Ixiii. 1905. 

 TSWETT, Ber. dtsch. bot. Ges. xxiv. 1906. KOHL, Ber. dtsch. bot. Ges. xxiv. 1906. 

 STAHL, Naturw. Wochenschr. 1905. No. 45. t 38 ) DETLEFSEN, Arb. Bot. Inst., 

 Wiirzburg, 1888, vol. iii. HOR. BROWX, Address to the Chem. Sect. Brit. Assoc. 

 for advance of Science, 1900. KEIXKE (Ergriinen), Sitzber. Preuss. Akad., Berlin, 

 1893. LOB, Landwirtsch. Jahrb. xxxv. 1906, Heft 4. 



EXGELMAXX and GAIDUKOW found that Oscillaria sancla assumed a red 

 colour in green light, a green colour in red light, a blue-green colour in yellow 

 light, and a brownish-yellow colour in blue light. They term this property com- 

 plementary chromatic adaptation, and see in it a confirmation of the action of 

 pigments as sensibilisators. 



( 39 ) The criticism in an English review that the intermediate products are not 

 evident from this equation, rests on a misunderstanding of the character of chemical 

 equations. According to SCHLOESIXG, Compt. rend. vol. cxxxi. more is liberated 

 than C0 2 decomposed. 



( 40 ) KREVSLER, Landw. Jahrb. 1885. GODLEWSKI, Arb. Bot. Inst. Wiirzburg, 

 vol. i. H. BROWN, cf. under No. 32 BUOWN and ESCOMBE, FARMER and CHANDLER, 

 Proc. Roy. Soc. 1902, Ixx. BROWN and ESCOMBE, Proc. Roy. Soc. Ixxvi. 1905. 

 MATTHAEI, Phil. Trans. Roy. Soc. Lond., cxcvii. 1904. BLACKMAN, Ann. of 

 Bot. xix. 1905. BLACKMAX and MATTHAEI, Proc. Roy. Soc. Lond., Ixxvi. 1905. 

 DEMOUSSY, Compt. rend, cxxxix. 1904. 



According to a recent result CO can be utilised when the percentage present is 

 considerable (?). 



( 41 ) H. BROWN and ESCOMBE, Static Diffusion of Gases and Liquids in relation 

 to the assimilation of Carbon and translocation in Plants, Phil. Trans. Roy. Soc. 

 ser. B. 193, 223, 1900. ( 42 ) F. HOFMEISTER, Die chemische Organisation der Zellc. 

 Braunschweig, F. Vieweg u. Sohn, 1901. (Naturw. Rundschau xvi. 1901.) G. 

 BREDIG, Anorgan. Fermente usw., Leipzig, W. Engelmann, 1901. S. BEXECKE 

 in 12). (*') SCHULZE, Zeitschr. f. physiol. Chemie, vol. xxiv., Landw. Jahrb. vol. 

 xxvii. 



According to STEPHAN 1 mgr. NaCl requires about 1 year to penetrate from a 

 10% solution for a distance of 1 metre into water, cane sugar would require 24 

 years, and albumen fully 14 years. The greater rapidity of osmotic movements in 

 the organism therefore presupposes acceleratory influences. 



(*) W. OSTWALD. Uber Katalyse. Naturw. Rundschau, xvi. Jahrg. 1901. 

 HOFMEISTER, ibid. p. 581 ff. G. BREDIG, I.e. CZAPEK, Antifermente, Ber. 

 dtsch. Bot. Ges. xxi. 1903. (*>) A. FISCHER, Jahrb. f. wiss. Bot. xxii. 1890. 

 MfJLLEU-THVRGAU, Landw. Jahrb. xi. 1882. 



According to NIKELEWSKI, Beihefte Bot. Zentralbl. xix. 1905, the transforma- 

 tions of starch, sugar, and oil in trees not only depend on external influences, but 

 in large part on the internal periodicity of the vital processes. 



(*) WEEVERS (Glucosides), Jahrb. f. wiss. Bot. xxxix. 1903. BEYERINCK, On 

 the formation of Indigo etc. Verb. Kon. Akad. v. Wetenschap. te Amsterdam, 

 31, Sept. 1899. On Indigo-Fermentation, ibid. 31, Miirz 1900. MARCHLEWSKI, 



