. Flashlights on nature [microform]. Insects; Plants; Insectes; Plantes. 254 Flashlights on Nature a i» ' â i i i! LA. MX MP. true flies still retain, in most cases, the two tiny poisers or balancers, just to remind us of their descent from four-winged ancestors. Nature has no habit more interesting than this retention of parts long since disused or almost disused ; by their aid we are able to trace the genealogy of plants and ani- mals. In No. II we have a dissec- ted view of the mouth-organs and blood-suck- ing apparatus of the gadfly, immensely en- larged, so as to show in detail the minut
. Flashlights on nature [microform]. Insects; Plants; Insectes; Plantes. 254 Flashlights on Nature a i» ' â i i i! LA. MX MP. true flies still retain, in most cases, the two tiny poisers or balancers, just to remind us of their descent from four-winged ancestors. Nature has no habit more interesting than this retention of parts long since disused or almost disused ; by their aid we are able to trace the genealogy of plants and ani- mals. In No. II we have a dissec- ted view of the mouth-organs and blood-suck- ing apparatus of the gadfly, immensely en- larged, so as to show in detail the minute struc- ture. In life, all these separate parts are com- bined together into a compound sucker (com- monly called the proboscis), which forms practi- cally a single tube or sheath ; they are dissected out here for facility of comprehension. The longest part, marked LA in the sketch, is the labium or lower lip, which makes up (he mass of the tube ; it ends in two soft finger-like pads, which are fleshy in texture, and which enable it to fix itself firmly. NO. II.âTHE GADFLY S LANCETS, WITH OTHER PARTS OF THE 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 Allen, Grant, 1848-1899. New York : Doubleday & McClure
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectin, booksubjectplants
