. Popular science monthly. fol-lowing account given by M. Charles Brongniart to the French Acad-emy of Sciences : Fossil insects have been foundin the carboniferous strata. Thecoal-beds of Commentry havefurnished some thirteen hundredspecimens, and Mr. Scudder hasdescribed six specimens that werefound in the Devonian beds ofNew Brunswick ; but, until veryrecently, no representative of thatclass had been detected in any ofthe more ancient formations. , a professor in the Schoolof Mines, has shown me a piece ofMiddle Silurian sandstone fromJurques, Calvados, bearing a dis-tinct impress
. Popular science monthly. fol-lowing account given by M. Charles Brongniart to the French Acad-emy of Sciences : Fossil insects have been foundin the carboniferous strata. Thecoal-beds of Commentry havefurnished some thirteen hundredspecimens, and Mr. Scudder hasdescribed six specimens that werefound in the Devonian beds ofNew Brunswick ; but, until veryrecently, no representative of thatclass had been detected in any ofthe more ancient formations. , a professor in the Schoolof Mines, has shown me a piece ofMiddle Silurian sandstone fromJurques, Calvados, bearing a dis-tinct impression of an insectswing (Fig. 3). The state of pres-ervation is not perfect, but we canstill distinguish most of the ner-vation. The wing, which is aboutthirty-five millimetres long, be-longed to a blattid, an insect ofthe cockroach family. The hu-meral field is broad, and upon itmay be seen the superior humeral vein ; the inferior humeral vein, bifur-cated at its extremity ; the vitrean or median vein, likewise divided into. Fig 2 —Fo««il Scorpion from the upper ^iluriaarocks of Lcsmihapow Lanarkt-hirc ^(otlancl,found by Dr. Hunter, Carluke. (Magnified tw odiameters.)
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
