958 APPENDIX 



Variations in growth rings (689): BONNIER, Compt. Rend. 133, 1285-1289, 



1902; HABERLANDT; SIMON, Ber. Deutsch. Bot. Ges. 20, 229-249, 



1902; URSPRUNG, Bot. Zeit. 62, 189-210, 1904. 

 Tyloses (695) : VON ALTEN, Bot. Zeit. 67, 1-23, 1909. 

 Stereids (696): DE BARY; HABERLANDT. 

 Influence of external factors on mechanical tissues (699): BALL, Jahrb. Wiss. 



Bot. 39, 305-341, 1903; BORDNER, Bot. Gaz. 48, 251-274, 1909; HABER- 

 LANDT; HIBBARD, Bot. Gaz. 43, 361-382, 1907; METZGER, Nat. Zeit. 



6, 249-273, 1908; PENNINGTON, Bot. Gaz. 50, 257-284, 1910; SONN- 



TAG, Jahrb. Wiss. Bot. 39, 71-105, 1903; WIEDERSHEIM, Jahrb. Wiss. 



Bot. 38, 41-69,. 1902. 

 Role of mechanical tissues (700): AMBRONN, Jahrb. Wiss. Bot. 12, 473-541, 



1881; COHN, Jahrb. Wiss. Bot. 24, 145-172, 1892; HABERLANDT; 



SCHWENDENER, Leipzig, 1874; SONNTAG, Flora 99, 203-259, 1909; 



TSCHIRCH, Jahrb. Wiss. Bot. 16, 303-335, 1885. 

 Cork (705): HABERLANDT. 

 Water accumulation in stems (718): MACDOUGAL and SPALDING, Carnegie 



Publ. 141, 1910; SPALDING, Bull. Torr. Bot. Club 32, 57-68, 1905. 

 Food accumulation in stems (719): COMBES, Rev. Gen. Bot. 23, 129—164, 1911; 



HARTER, Plant World 13, 144-147, 1910; LECLERC DU SABLON, Rev. 



Gen. Bot. 16, 341, ff.; 18, 5 ff., 1904, 1906; NIKLEWSKI, Bei. Bot. Cent. 



19, 68-117, 1905; SCHELLENBERG, Ber. Deutsch. Bot. Ges. 23, 36-45, 



1905. 

 Latex (720): BRUSCHI, Annali di Botanica 7, 671—701, 1909; GAUCHER, Ann. 



Sci. Nat. Bot. VIII, 12, 241-260, 1900; HABERLANDT; KNIEP, Flora 94, 



129-205, 1905; MOLISCH, Jena, 1901; PARKIN, Ann. Bot. 14, 193—214, 



1900. 

 Resin ducts, etc. (723): HABERLANDT; TSCHIRCH, Leipzig, 1908. 

 Stem variation (725) : GOEBEL I; GOEBEL IL 

 Stem elongation (725): BRENNER, Flora 87, 387-439, 1900; LAURENT, Rev. 



Gen. Bot. 19, 129-160, 1907; MACDOUGAL, Mem. N. Y. Bo . Gard., 1903; 



SELBY, Bull. Torr. Bot. Club 33, 67-76, 1906. 

 Stem dwarfing (730): BONNIER, Ann. Sci. Nat. Bot. VII, 20, 217-360, 1895. 

 Spinescence (741): LOTHELIER, Rev. Gen. Bot. 5, 480 fE., 1893; LOTHELIER, 



Lille, 1893; ZEIDLER, Flora 102, 87-95, 1911. 

 Tuberization (744): BERNARD, Rev. Gen. Bot. 14, 5 ff., 1902; JUMELLE, 



Rev. Gen. Bot. 17, 49-59, 1905; MOLLIARD, Bull. Soc. Bot. France 50, 



631-633, 1903, and Rev. Gen. Bot. 19, 241 ff., 1907; VOCHTING, Organ- 



bildung, Bonn, 1878, 1884, also Jahrb. Wiss. Bot. 34, 1-149, 1889, and Bot. 



Zeit. 60, 87-114, 1902. 

 Regeneration (748): COULTER and CHRYSLER, Bot. Gaz. 38, 452-458, 



1904; GOEBEL I and II, also Biol. Cent. 22, 385 ff., 1902, and Bull. Torr. 



Bot. Club 30, 197-205, 1903; McCALLUM, Bot. Gaz. 40, 97 ff., 1905; 



MORGAN, New York, 1901. 

 Polarity (749): KLEBS, Jena, 1903; KUSTER, Jahrb. Wiss. Bot. 40, 279-302, 



1904; KUPFER, Mem. Torr. Bot. Club 12, 195-241, 1907; MORGAN, 



Bull. Torr. Bot. Club 30, 206-213, 1903; 31, 227-230, 1904, and Science 20, 



