3G4 PROFESSOR WILLIAMSON ON THE PLANTS OF THE COAL-MEASURES. 
PLATE 25. 
Lyginodendron (?) anomalum. 
Fig. 90. Transverse section of the vascular zone of a stem from Arran. Enlarged 
14 diameters. 
Fig. 91. Part of fig. 90. Further enlarged to 50 diameters. 
Fig. 92. Tangential section of the same stem. Enlarged 14 diameters. 
Sigillarian or Lepidodendroid Baric. 
Fig. 93. Transverse section of the outermost hark. Enlarged 8 diameters. 
Fig. 94. Radial vertical section of fig. 93. Enlarged 8 diameters. 
Fig. 95. Tangential vertical section of fig. 93, made in a line between the two stars. 
Enlarged 8 diameters. 
Fig. 96. Transverse section of a fragment from the innermost portion of the same 
specimen. Enlarged 82 diameters. 
Fig. 97. Tangential section of fig. 96. Enlarged 32 diameters. 
Fig. 98. Transverse section of a portion of fig. S3, made in the line of a, a. 
Enlarged 32 diameters. 
Fig. 99. Tangential section of fig. 98. Enlarged 32 diameters. 
Fig. 100. Radial vertical section of fig. 98. Enlarged 32 diameters. 
Fig. 101. Small portion ol fig. 95. Enlarged 16 diameters. 
Oidospora anornala. 
Fig. 102. Unknown bodies. Enlarged 360 diameters. 
Volhnannia parvula. 
Fig. 103. Transverse section. Enlarged 54 diameters. 
