![Outlines of zoology. Zoology. EARTHWORM. 187 starchy food into sugars, and others—peptic and tryptic—not less im- portant. The wall of the stomach-intestine from without inwards, as may be traced in sections, Outlines of zoology. Zoology. EARTHWORM. 187 starchy food into sugars, and others—peptic and tryptic—not less im- portant. The wall of the stomach-intestine from without inwards, as may be traced in sections,](https://c8.alamy.com/comp/RDP04F/outlines-of-zoology-zoology-earthworm-187-starchy-food-into-sugars-and-otherspeptic-and-trypticnot-less-im-portant-the-wall-of-the-stomach-intestine-from-without-inwards-as-may-be-traced-in-sections-is-made-up-of-pigmented-peritoneum-muscles-capillaries-and-an-internal-ciliated-epithelium-in-the-other-parts-of-the-gut-the-innermost-lining-is-not-ciliated-but-covered-with-a-cuticle-vascular-systemthe-fluid-of-the-blood-is-coloured-red-with-haemoglobin-and-contains-small-corpuscles-along-the-median-dorsal-line-of-the-gut-a-prominent-blood-vessel-snv-fig-82transverse-s-RDP04F.jpg)
Outlines of zoology. Zoology. EARTHWORM. 187 starchy food into sugars, and others—peptic and tryptic—not less im- portant. The wall of the stomach-intestine from without inwards, as may be traced in sections,
![The Cambridge natural history . )ly to fresh-water operculate Ciasterop(xla. But the passao-efrom a marine to an aerial life involves much profomider changes<if environment, wliich have to be met l)y correspondinglv im-portant The Cambridge natural history . )ly to fresh-water operculate Ciasterop(xla. But the passao-efrom a marine to an aerial life involves much profomider changes<if environment, wliich have to be met l)y correspondinglv im-portant](https://c8.alamy.com/comp/2AWHTEB/the-cambridge-natural-history-ly-to-fresh-water-operculate-ciasteropxla-but-the-passao-efrom-a-marine-to-an-aerial-life-involves-much-profomider-changesltif-environment-wliich-have-to-be-met-ly-correspondinglv-im-portant-changes-in-the-organism-this-may-be-in-part-tlif-sb-k-akad-itiss-ivicn-1889-p-4-but-the-view-i-not-uiiivcrsallvaccepted-fig-10-trigonia-jec-inata-laru-sjdueynsw-i6-origin-of-fresh-water-univalves-reason-why-the-ancestry-of-ltill-iuhuonata-whether-land-or-fresh-water-is-so-lifficnlt-to-tract-h-gasteropoda-i-oprrculatc-caniducnnd-2AWHTEB.jpg)
The Cambridge natural history . )ly to fresh-water operculate Ciasterop(xla. But the passao-efrom a marine to an aerial life involves much profomider changes<if environment, wliich have to be met l)y correspondinglv im-portant
![Advanced Geography . but the former is much the lighter and the more porous. All the large cities in or near the coal fields are im-portant markets for coal. Among the cities Advanced Geography . but the former is much the lighter and the more porous. All the large cities in or near the coal fields are im-portant markets for coal. Among the cities](https://c8.alamy.com/comp/2AMXT5E/advanced-geography-but-the-former-is-much-the-lighter-and-the-more-porous-all-the-large-cities-in-or-near-the-coal-fields-are-im-portant-markets-for-coal-among-the-cities-having-thelargest-trade-in-this-product-are-philadelphia-pittsburgand-chicago-great-britain-germany-austria-france-and-belgiumhave-extensive-coal-beds-and-iron-mines-and-have-there-fore-taken-a-leading-place-among-the-manufacturingcountries-of-the-world-129-iron-there-are-four-principal-iron-ore-districts-in-the-united-states-these-are-all-in-old-worn-down-mountain-regions-the-most-productive-district-is-near-t-2AMXT5E.jpg)