. The bee-keeper's guide : or Manual of the apiary . Bee culture; Bees. Eyes of Insects, 59 one, for nothing answering in the least to ears, structurally, has yet been discovered. The- eyes are of two kinds, the compound, which arc- always present in mature insects, and the ocelli or simple eyes, which may or may not be present. When pi'esent there are usually three, which, if joined by lines, will describe a triangle, in the vertices of whose angles are the ocelli. Rarely there are but two ocelli, and very rarely but one. The simple eyes (Fig. Si ffJ ) ^^'^ circular, and possess a cornea, len
. The bee-keeper's guide : or Manual of the apiary . Bee culture; Bees. Eyes of Insects, 59 one, for nothing answering in the least to ears, structurally, has yet been discovered. The- eyes are of two kinds, the compound, which arc- always present in mature insects, and the ocelli or simple eyes, which may or may not be present. When pi'esent there are usually three, which, if joined by lines, will describe a triangle, in the vertices of whose angles are the ocelli. Rarely there are but two ocelli, and very rarely but one. The simple eyes (Fig. Si ffJ ) ^^'^ circular, and possess a cornea, lens, and retina, which receives the nerve of sight. From the experiments of Reaumur and Swammerdam, which consisted in covering the eyes with varnish, they r^ Fig. 13. Fig. 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 Cook, Albert John, 1842-1916. Chicago, Ill. : George W. York & Co.
Size: 1462px × 1708px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbees, bookyear1894
