20 
Scott. — On the Fertile Shoots of 
Bertrand, C. E. (1911) : Le Bourgeon femelle des Cordaites d’apres les preparations de Bernard 
Renault. Bull, de la Soc. des Sciences de Nancy, p. x. 
Brongniart, A. (1881) : Recherches sur les Graines fossiles silicifiees. Paris. 
Grand’Eury, C. (1877) : Flore carbonif&re du Departement de la Loire et du Centre de la France. 
Paris. 
Maslen, A. J. (1911) : The Structure of Mesoxylon Stitcliffii (Scott). Ann. Bot., vol. xxv, p. 381. 
Renault, B. (1879) : Structure comparee de quelques tiges de la Flore Carbonifere. Nouvelles 
Archives du Museum, tome ii, 2 e serie, p. 215. 
Scott, D. H. (1912): The Structure of Mesoxylon Lomaxii and M. poroxyloides. Ann. Bot., 
vol. xxvi, p. ion. 
(1918) : The Structure of Mesoxylon multirame. Ann. Bot., vol. xxxii, p. 437. 
Scott, D. II., and Maslen, A. J. (1910) : On Mesoxylon , a New Genus of Cordaitales. Preliminary 
Note. Ann. Bot., vol. xxiv, p. 236. 
Seward, A. C. (1917) : Fossil Plants, vol. iii. Cambridge University Press. 
EXPLANATION OF PLATES I-III. 
Illustrating Dr. Scott’s paper on tjxe Fertile Shoots of Mesoxylon and an Allied Genus. 
The photographic figures require to be examined with a lens. 
PLATE I. 
Photographs by Mr. W. Tams. 
Figs. 1-6. Fertile shoots of Mesoxylon multirame. 
Fig. 1. Transverse section of the fertile shoot shown in Text-fig. 1 ; at A is a detached branch 
with bracts, and at B the bracts of another branch, x about 7. S. 2783. 
Fig. 2. Another detached bud, transverse, with numerous bracts, br ., and a large appendage, ap. 
x 22. S. 2785. 
Fig* 3* Vascular bundle of the appendage in Fig. 2, showing the central protoxylem, px. 
x about 200. S. 2785. 
. Fig. 4. Part of transverse section of a stem of M. multirame , accompanied by a fertile shoot. 
x 1 ., secondary wood of the stem; ax., an axillary stele of the same; F.S., main fertile shoot; b., 
branch attached to it. x about 8. S. 2564. 
Fig. 5. Another transverse section of the same fertile shoot ; F.S., main shoot ; b., large hastate 
branch attached to it. x 17. S. 2568. 
Fig. 6. Another fertile shoot in obliquely transverse section. F.S. , main shoot, with narrow 
stele ; b., large branch attached to it, with bracts, x about 10. S. 3040. 
Figs. 7-9. Shoots of Mesoxylopsis Arberae. 
Fig. 7. Shoot in transverse section. /., pith, apparently discoid. U. 1 , single leaf-trace passing 
through wood; l.t. 2 , leaf-trace forking in cortex; l.b., leaf-base with numerous bundles; /., leaves 
surrounding shoot, x about 8. S. 2598. 
Fig. 8. Next section of the same shoot, p., pith, as before ; lit., leaf-trace beginning to fork ; 
l.b., leaf-base expanding into lamina on either side; /., leaves surrounding shoot, x about 8. 
S. 2599. 
Fig. 9. Lower part of another shoot in transverse section, st., centre of stele, with small solid 
pith and very unequal wood in which two single leaf-traces are seen ; l.b., one of the leaf-bases. 
X 17. S. 3017. 
