...trunks are seen in an erect position buried in sandstone and shale, rooted sigillariaa or calamitcs are often observed at different heights in the enveloping...the trunks of the submerged trees being covered with serpula,', or a species of spirorbis. Not infrequently seams of coal are succeeded by beds of impure...

...of the morass. In the ancient coal of the South Joggins in Nova Scotia, many of the underclays shew a network of Stigmaria roots, of which some penetrate...covered with serpulae or a species of spirorbis. Not unfrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly of...

...generation. Where trunks are seen in an erect position buried in sandstone and shale, rooted Sigillariae or Calamites are often observed at different heights...covered with serpulae or a species of spirorbis. Not unfrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly of...

...generation. Where trunks are seen in an erect position buried in sandstone and shale, rooted Sigillariaa or Calamites are often observed at different heights...the trunks of the submerged trees being covered with serpulas or a species of spirorbis. Not unfrequently seams of coal are succeeded by beds of impure...

...generation. Where trunks are seen in an erect position buried in sandstone and shale, rooted Sigillariae or Calamites are often observed at different heights...covered with serpulae or a species of spirorbis. Not unfrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly of...

...generation. Where trunks are seen in an erect position buried in sandstone and shale, rooted sigillariEe or calamites are often observed at different heights...covered with serpulae, or a species of spirorbis. Not ^infrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly...

...generation. Where trunks are seen in an erect position buried in sandstone and shale, rooted sigillariae or calamites are often observed at different heights...covered with serpulae, or a species of spirorbis. Not e(infrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly...

...position buried in sandstone and shale, rooted sigillariae or calamites are often observed at diflerent heights in the enveloping strata, attesting the growth...covered with serpulae, or a species of spirorbis. Not unfrequently seams of coal are succeeded by beds of impure bituminous limestone, composed chiefly of...