bcj 
270 ON THE FOSSIL PLANTS OF THE COAL-MEASUEES. 
Fig. 126. Longitudinal section of another specimen of Cardiocarpon compressum made 
vertically to the broad surface of fig. 121, and nearly at its centre. 
a. Exotesta, b. Endotesta. d. Micropyle. f. Nucular membrane, g. Peri- 
spermic membrane, n. Nucleus. 
Eig. 127. A vertical section of the same specimen made on one side of its centre along 
the line fig. 121, x. 
ig. 128. A vertical section made through the line of fig. 121 y. 
ig. 128*. Transverse section of Cardiocarpon compressum near its base. 
Fig. 129. Cardiocarpon Butterworthii. External aspect. Natural size. 
Fig. 130. Cardiocarpon Butterworthii. Enlarged 6 diameters. 
Fig. 131. Cardiocarpon Butterworthii. Cells of the perisperm of a second and some- 
what larger specimen. Enlarged 50 diameters. 
Figs. 132, 133, 134. Three seeds from the Upper Coal-measures near Stonehouse, 
Lanarkshire. Enlarged 7 diameters. Apparently the Cardiocarpum tenellum 
of Dr. Dawson. 
Fig. 135. Half of a seed of Polypterospermum from the uppermost Coal-measures of 
Ardwick. Natural size. 
Figs. 136 & 137. The two halves, apparently, of the same seed, enlarged 4 diameters. 
