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; cn, nerve cord; nf, parts of nephridium; on, external opening of nephridium; ov, ova; t, testis." (Britannica, 1910)

Sectional View of Acanthobdella

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

An illustration of a section of the reverberatory furnace. A reverberatory furnace is a metallurgical or process furnace that isolates the material being processed from contact with the fuel, but not from contact with combustion gases. The term reverberation is used here in a generic sense of rebounding or reflecting, not in the acoustic sense of echoing.

Sectional View of a Reverberatory Furnace

An illustration of a section of the reverberatory furnace. A reverberatory furnace is a metallurgical…

Section through the Head and Neck on the Median Line. 1. Medulla Oblongata 2. Pons 3. Right lobe of cerebrum 4. Cerebellum in section 5. Blood vessel 6. Corpus Striatum 7. Nasal Passage 8. Nasal bone 9. Soft Palate 10. Hard Palate 11. Tongue 12. Epiglottis 13. Os Hyoides 14. Oesaphagus 15. Spinal 16. Larynx 17. Windpipe

Sectional view of the Head

Section through the Head and Neck on the Median Line. 1. Medulla Oblongata 2. Pons 3. Right lobe of…

"Diagram of a Sectional View of Nasal and Throat Passageways. <em>C</em>, nasal cavities; <em>T</em>, tongue; <em>L</em>, lower jaw; <em>M</em>, Mouth; <em>U</em>, uvula; <em>E</em>, epiglottis; <em>G</em>, larynx; <em>O</em>, gullet, or esophagus." &mdash; Blaisedell, 1904

Nasal and throat passageways

"Diagram of a Sectional View of Nasal and Throat Passageways. C, nasal cavities; T,…

An illustration of a longitudinal sectional view of the valerian flower. Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Flower (Longitudinal Section)

An illustration of a longitudinal sectional view of the valerian flower. Valerian is a hardy perennial…

An illustration of the valerian seed with attached pappus. In a composite flower, Pappus is the part of individual disk and ray flowers that surrounds the base, in the same manner as the calyx does in a non-compound flower. The pappus may be like bristles or tiny hairs, teeth, or scales, and is usually too small to see without magnification. Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers. The flowers are in bloom in the northern hemisphere from June to September. Valerian was used as a perfume in the sixteenth century.

Valerian Seed with Pappus

An illustration of the valerian seed with attached pappus. In a composite flower, Pappus is the part…

"Enlarged sectional view of a ripple or train of waves." &mdash;Croft 1917

Wave

"Enlarged sectional view of a ripple or train of waves." —Croft 1917