Scott . —The Structure of Mesoxylon multirame . 455 
very desirable that more detailed information as to the organization of the 
stem in the latter genus should be acquired, especially as regards the 
phloem. 
It is hoped soon to publish a full account of the supposed reproductive 
shoots of the genus Mesoxylon and of the anatomy of the isolated species 
M. platypodium. 
: r ;• ■ . ■. ■' ■ . - - !'■ ■ ■' . - • , 
The photographs in Plates XI and XII are the work of Mr. W. Tams, 
while the figures in Plates XIII and XIV are from the hands of Mr. G. T. 
Gwilliam, Miss G. C. Harrison, and in the case of PI. XIII, Fig. 21, of 
Mr. J. Allen. The text-figures 1 and 2 were drawn by Mrs. D. H. Scott, 
F.L.S. To all these collaborators I am much indebted for their indis¬ 
pensable assistance. 
Bibliography. 
1. Arber, A. ( 1910 ) : On the Structure of the Palaeozoic Seed Milrospennum coiHpressum (Will.). 
Ann. Bot, vol. xxiv, 1910, p. 491. 
2 . Bertrand, C. E., et Renault, B. ( 18 S 6 ): Recherches sur les Poroxylons , gymnospermes 
fossiles des terrains houillers superieurs. Arch. Bot. du Nord de la France, vol. ii, 
1886, p. 243. 
3 . Jeffrey, E. C. ( 1917 ) i The Anatomy of Woody Plants. University of Chicago Press, 1917. 
4 . Maslen, A. J. ( 1911 ) : The Structure of Mesoxylon Stitclijfii (Scott). Ann. Bot., vol. xxv, 
1911, p.381. 
5 . Renault, B. ( 1879 ): Structure comparee de quelques tiges de la Flore Carbonifere. Nouvelles 
Archives du Museum, ii, 2 e s^r., 1879, p. 213. 
6. -———- ( 1896 ) : Bassin houiller et permien d’Autun et d’Epinac : Flore fossile. Etude 
des gites mineraux de la France, 1896 (Atlas, 1893). 
7 . Scott, D. H. ( 1902 ) : On the Primary Structure of certain Palaeozoic Stems with the Dado- 
xylon Type of Wood. Trans. Roy. Soc., Edinburgh, vol. xl, Part II, 1902, p. 331. 
g. ---- ( 1912 ): The Structure of Mesoxylon Lomaxii and M. poroxyloides. Ann. Bot., 
vol. xxvi, 19.12, p. 1011. 
9. -- and Maslen, A. J. ( 1910 ): On Mesoxylon , a new Genus of Cordaitales. Pre¬ 
liminary Note. Ann. Bot., vol. xxiv, 1910, p. 236. 
