. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 52 THE WINGS CH. border, close to the tip, at the point of greatest impact with the air during flight, was clearly a necessity. The close approximation of R to C just at this point in the Protodonata provided the re- quired means, viz. a thickening of the membrane in the narrow space between them. Thus arose the most primitive type of. K ^ ^^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 52 THE WINGS CH. border, close to the tip, at the point of greatest impact with the air during flight, was clearly a necessity. The close approximation of R to C just at this point in the Protodonata provided the re- quired means, viz. a thickening of the membrane in the narrow space between them. Thus arose the most primitive type of. K ^ ^^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tillyard, Robin John, 1881-1937. Cambridge [Eng. ] : University Press
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambridgeenguniver
