. British dragonflies (Odonata). Dragon-flies; Odonata -- Great Britain. q26 British Dragonfiies. but it allows better of their examination. Often the claws cling" to the board and keep the legs in position, but sometimes it is necessary to use pins. The wings next require attention, and some system of arrangement had better be fixed upon from the first. The author makes it a rule to have the costal margin of the hind- wings in a straight line, and the fore-wings at some such. Fig. 56.—Diagram to the Method of Setting a Dragonfly. angle with them as that in Fig. 57. They shoul
. British dragonflies (Odonata). Dragon-flies; Odonata -- Great Britain. q26 British Dragonfiies. but it allows better of their examination. Often the claws cling" to the board and keep the legs in position, but sometimes it is necessary to use pins. The wings next require attention, and some system of arrangement had better be fixed upon from the first. The author makes it a rule to have the costal margin of the hind- wings in a straight line, and the fore-wings at some such. Fig. 56.—Diagram to the Method of Setting a Dragonfly. angle with them as that in Fig. 57. They should first be held in position by the inner pair of braces. Then the anal angles, which are often ver}- important for classificatory purposes, and therefore should be clearly displayed, must be kept horizontal by means of two strips of thin cardboard or stiff paper, as in the illustration. This being done, the tips of the wings. 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 Lucas, William John. London, L. U. Gill
Size: 1459px × 1712px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1900
