. Marvels of insect life [microform] : a popular account of structure and habit. Insects; Insectes. TiiE Insect Heart orti"ii oiilv of the "dorsal Vi-sscl " a bnUe is hi'n' >liuwn. The coiinecli'd iiiitHrs of which It coiisiists rxpami and roii- . consists of animals to which these authorities have f^ivcn the name of Arthropods. It includes the crabs ami lobsters, spiders, centipedes, Insects, etc. All these creatures afirec in having the body built in >e^- nienl?- or rings, all or some of which bear jointed append- iii^es. The Insects ditfer from the others in hnving thes
. Marvels of insect life [microform] : a popular account of structure and habit. Insects; Insectes. TiiE Insect Heart orti"ii oiilv of the "dorsal Vi-sscl " a bnUe is hi'n' >liuwn. The coiinecli'd iiiitHrs of which It coiisiists rxpami and roii- . consists of animals to which these authorities have f^ivcn the name of Arthropods. It includes the crabs ami lobsters, spiders, centipedes, Insects, etc. All these creatures afirec in having the body built in >e^- nienl?- or rings, all or some of which bear jointed append- iii^es. The Insects ditfer from the others in hnving these segments grouped, in adult life, into three regitjns, usuallv <piite distinct. These regions are the head, the tor('-bod\", and the hind-body. The spicUrs. which are conimonh- regarded in popular esti- mation as Insects, lia\'e onlv two bod\-regions. There arc other differences, of course, which are not e\ident u])on a superhcial view of the exterior form ; but e\en hero two or three additional points may be mentioned, contrasting a spider witii an Insect. The head of the Insect bears a pair of an- tenn;e. or " feelers" ; the spider lias no antennit. The Insect, with a few excep- tions among the sim])ler forms, has a pair of prominent compound eyes made \ip of a large num- ber of lenses, and two or three simple eyes, or " ; placed between the compound eyes. The spider's eyes are all simple, and number. \n Insect's Digestivi: System. rill lH)dv of a Iwc i- hiTi' Uid open from above to show till' digi'stivi' -vii'iii. .At thi' nppiT part of the diaKTHiii itv bt'KinniiiK is shown in the extended mouth parts passing bacl( iato the Kiilli'l with its ti'miinal I'lilargcmrnt. the crop or stomach, and cndiiif; with the intt^slincs. Tin* ii<-r\oiis ami cirrtilatorv systems arp hfn- mnicd a'iidc t" thv richt aii'i Ht rcsp' Please note that these images are extracted from scanned page images that may have been digitally enhanced for re
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1915
