 | Massachusetts. Geological Survey, Edward Hitchcock - 1833 - 714 Seiten
...made, that among the Monte Bolca ichthyolites, one fish was found in the act of swallowing another ! A thin layer of carbonaceous matter usually marks...head, whose outlines are rendered visible only by irregutar ridges and furrows. In some cases, however, satin spar forms a thin layer over the carbonaceous... | |
 | Geological Society of Pennsylvania, Philadelphia - 1834 - 214 Seiten
...made, that among the Monte Bolca ichthyolites, one fish was found in the act of swallowing the other. " A thin layer of carbonaceous matter usually marks...layer over the carbonaceous matter, and being of a bright gray color, it gives to the specimens an aspect extremely like that of fish just taken out of... | |
 | 1835 - 438 Seiten
...made, that among the Monte Bolca iehthyolites, one fish was found in the act of swallowing the other. " A thin layer of carbonaceous matter usually marks...irregular ridges and furrows. In some cases, however, satin-spar forms a thin layer over the carbonaceous matter, and being of a bright gray colour, it gives... | |
 | 1835 - 442 Seiten
...that among the Monte Bolca ichthyolites, one fish was found in the act of swallowing the other. *' A thin layer of carbonaceous matter usually marks...irregular ridges and furrows. In some cases, however, satin-spar forms a thin layer over the carbonaceous matter, and being of a bright gray colour, it gives... | |
 | John Ruggles Cotting - 1835 - 134 Seiten
...were brought from the banks of the river at South Hadley Falls and are of the sandstone formation. 53 head, whose outlines are rendered visible only by irregular ridges and furrows. Sometimes the impression is perfect, but most commonly the outlines are much deranged, so that it becomes... | |
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... Indeed I have not unfrequently met with one fish lying across another^ without the intervention of a layer of shale, and from these specimens, I can easily conceive how the mistake should have been made, that among the Monte Bolca ichthyolites, one... 