An illustration of a sectional view of a Acanthobdella, a member of the annelid family. "c, Coelom; c.ch, Coelomic epithelium (yellow cells); cg, glandular cells; cl, Muscle cells of lateral line; cp, Pigment cells; ep, Ectoderm; g, Nerve cord; m, Intestine; mc, Circular muscle; ml, Longitudinal muscle; vd, Dorsal vessel; ww, Ventral vessel." (Britannic, 1910)

Sectional View of Acanthobdella

An illustration of a sectional view of a Acanthobdella, a member of the annelid family. "c, Coelom;…

Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering the third wheel which rests on the ocean bottom. Water tanks are filled when descending and pumped dry when ready to come up.

Argonaut, sectional view

Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering…

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment for searchlight, L-forward lookout compartment, M-gasoline tanks, N-compressed air reserve, O-water ballast, S-conning-tower, T-compass, U-outside steering gear.

Argonaut, side view

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment…

Sectional view of a bell.

Bell

Sectional view of a bell.

The longitudinal section of the Hydnora africana is a parasitic plant growing in deserts known for giving of the odor of feces to attract pollinators like dung beetles.

Hydnora africana

The longitudinal section of the Hydnora africana is a parasitic plant growing in deserts known for giving…

Sectional view of Kensico dam.

Kensico Dam

Sectional view of Kensico dam.

An illustration of the median longitudinal section through anterior end of the sea lamprey. "a.v.o, Antrio-ventricular opening; br, Brain; br.o, Internal opening of gill sac; d.a, Dorsal aorta; d.c, Ductus cuvieri; h.v, Hepatic vein; i.j.v, Inferior jugular vein; N, Notochord; oes, Esophagus; olf, Olfactory organ; oc, Pericardium; p.c.v, Left posterior cardinal vein; pit, Pituitary tube; V, Ventricle; v, Velum." (Britannica, 1910)

Cross Section View of a Sea Lamprey

An illustration of the median longitudinal section through anterior end of the sea lamprey. "a.v.o,…

Rock fill and earth dam.

Sectional View of Dam

Rock fill and earth dam.

"Sections of the stem of a Brazilian Vellozia; 1. transversely; 2, 3. longitudinally." -Lindley, 1853

Brazilian Vellozia

"Sections of the stem of a Brazilian Vellozia; 1. transversely; 2, 3. longitudinally." -Lindley, 1853