6y6 Browne . — Contributions to our Knowledge of the 
between them through seven internodes. Each of the other two meshes, if 
traced downwards, is seen to be built up by numerous confluent meshes of 
very different lengths. Above the three traces of the uppermost whorl the 
Text-fig. 5. Longitudinal reconstruction of the xylem of Cone A of E. limosum. Axial xylem 
black ; leaf-traces and parenchyma white. Magnification circa 16. 
xylem dies out, and in this way the three remaining meshes become con- 
fluent round the terminal sporangiophore. The confluence of meshes 
distinct at their origin is not confined to unclosed meshes ; it occurs, though 
