. Evenings at the microscope : or, researches among the minuter organs and forms of animal life. Microscopy; Microscopes; Medical microscopy. INSECTS : WINGS AND THEIE APPENDAGES. 91. FKIKGED SCALE OF riERie. that the fringe is arranged. The surface does not ap- pear to be elevated in ribs, but smooth; while tlie whole interior, except a crescent around the foot-stalk, is filled with pigment-grains, imparting a mottled appearance. It is remarkable that all the scales of this form have the foot-stalk turned in under the expanse. The example which we are considering is from the white portion of
. Evenings at the microscope : or, researches among the minuter organs and forms of animal life. Microscopy; Microscopes; Medical microscopy. INSECTS : WINGS AND THEIE APPENDAGES. 91. FKIKGED SCALE OF riERie. that the fringe is arranged. The surface does not ap- pear to be elevated in ribs, but smooth; while tlie whole interior, except a crescent around the foot-stalk, is filled with pigment-grains, imparting a mottled appearance. It is remarkable that all the scales of this form have the foot-stalk turned in under the expanse. The example which we are considering is from the white portion of the wing of Pieris Olaucvppe, a fine but- terfly from China; but a similar struc- ture is found in our own Garden Whites, and Meadow Browns, {Pieridm and ScUyridoB). Scales taken from the brilliant changeable blue-green patch in the hind- wing of Pa/pilio Paris, a fine Indian butterfly, have an interesting appearance. They are simply pear-shaped in outline, ^with few longitudinal ribs set far apart, and numerous strongly-marked cor- rugations running across between them. That these are really elevations of the surface, is well seen in some scales, even with transmitted light, and a high power ; for the slopes of the wrinkles that face the light display the lustrous emerald reflection proper to the wing, while the transmitted colour of the whole scale is a rich transparent red. The dimensions of the scales do not bear any certain proportion to the size of the insect which is clothed with them; those from the broad wings of the noble Sahornia Atlas, for example, eight or nine inches in expanse, being exceeded in size by some from those of our little native Muslin Moth, an inch 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 Gosse, Philip Henry, 1810-1888. New York, D. Appleton
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