136 THE MEDALS OF CREATION. Cuap. VI. 
by a high power and transmitted light, is figured Pl. V. fig. 6; 
the smooth interspaces are composed of cellular tissue. _ | 
This opinion of M. Brongniart was confirmed by the 
discovery, in 1843, at St. Helen’s, near Liverpool, of an 
upright trunk of a Sigillaria, nine feet high, with ten roots 
CoaAL. 
UNDER-CLAY, 
Lien. 38. EREcT SLTEM OF A SIGILLARIA, WITH ROOTS. 
Coal Mine, ned Liverpool. 
a. The trunk of the tree, traversing a bed of Coal. 
b. The roots (Stigmarig) spreading out in the Under-clay. 
eight or nine feet in length, still attached, and extending in 
their natural position. These roots are undoubted Stigmarwe 
of the usual species, S. ficoides; and the radicles, formerly 
considered leaves, are spread out in all directions, to the extent — 
of several feet.* To the sagacity and perseverance of Mr. | 
Binney, of Manchester, science is indebted for this important 
* From a communication to the British Association at Cork, 1843. 
