. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. â » .17 ;â¢â i 1052 rilK lUJ'lTKHFLIKS OF NKW » â ], ' .1 If' â â â¢I m. its copoon entirely out of si<rlit of iind often at ;i jireat dit^tance from ner *. Ft is plain that in instaneos of tliis sort, known toev(!ry entomo- lof^ist and too luiinoroiis to mention, the nense of smell must be the sole direetinjj ajrent: and since in many of these instane<'s no odor is perceptible to hnman sense, it is plain that
. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. â » .17 ;â¢â i 1052 rilK lUJ'lTKHFLIKS OF NKW » â ], ' .1 If' â â â¢I m. its copoon entirely out of si<rlit of iind often at ;i jireat dit^tance from ner *. Ft is plain that in instaneos of tliis sort, known toev(!ry entomo- lof^ist and too luiinoroiis to mention, the nense of smell must be the sole direetinjj ajrent: and since in many of these instane<'s no odor is perceptible to hnman sense, it is plain that there may be many 0(V)rH emitted which thouf^h imperceptible to ns, may be all-sufficient for them. This abim- dantly explains the many cases of organs from which wc can perceive no odor, when in allied insects identical organs are perceptibly fragrant. Moreov(M', we have in certain s])eciKc, structures in the enlarged antennal club of butterflies what are plainly sense-organs supplied with nerve- endings ; and inasmuch as there is no structure found in them which eould subserve the purpose of hearing, or indeed of any other of the senses known to us excepting that of smell, it is the i)elief of physiologists that here are situated the organs of smell in butterflies. The under surfaceof the anten- nae of butterflies is invarialily naked to a greater or less degree, and, more l)lainly in some joints than in others, little dimples can be readily seen. It is in these little pits that are situated the organs of smell : each consists of a sae-like cavity, the opening into whicdi is often protected by cuticular processes, and at the bottom of which in the hypoderm is situated a fusiform bodv with a delicate conical endinji extended free into the centre of the sao, its other extremity being in direct continuation of a nervous thread. For myself I am inclined to attribute to butterflies as to moths an ex- ceedingly delicate and high perce](tioi\ of odors. Any 07ie observin
Size: 1150px × 2173px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectbutterflies, bookyear
