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An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus; cv, contractile vacuole.

Amoeba

An illustration of an amoeba: n, nucleus; cv, contractile vacuole.

An illustration of Noticulales with buds. The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

An illustration of Noticulales with buds. The Noctilucales are a peculiar order of marine dinoflagellates.…

An illustration of Noticulales in section: an, anus; d, denticle; f, flagellum; t, tentacle. The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

An illustration of Noticulales in section: an, anus; d, denticle; f, flagellum; t, tentacle. The Noctilucales…

The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that…

This Renaissance Oblong Panel is an intarsia (wood inlay) design found on a cabinet in Perugia, Italy.

Renaissance Oblong Panel

This Renaissance Oblong Panel is an intarsia (wood inlay) design found on a cabinet in Perugia, Italy.

The intarsia oblong panel was designed in 1495. It is a wood inlay design found in Bologna, Italy.

Intarsia Oblong Panel

The intarsia oblong panel was designed in 1495. It is a wood inlay design found in Bologna, Italy.

The intarsia oblong panel was designed in 1495. It is a wood inlay design found in Bologna, Italy.

Intarsia Oblong Panel

The intarsia oblong panel was designed in 1495. It is a wood inlay design found in Bologna, Italy.

This Renaissance lunette panel is an intarsia (wood inlay) design. It is found in the Santa Maria church in Organo, Verona, Italy.

Renaissance Lunette Panel

This Renaissance lunette panel is an intarsia (wood inlay) design. It is found in the Santa Maria church…

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative…

This modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Parquetry Panel

This modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative…

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative…

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative…

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern square panel is a parquetry design of a geometric mosaic of wood pieces used for decorative…

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Square Panel

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Hexagonal Panel

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Hexagonal Panel

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

Modern Hexagonal Panel

The modern panel is a parquetry design of a geometric mosaic of wood pieces used for decorative effects.

The mosaic circle pattern is inlaid pieces of stone, wood, glass, leather or straw to make a picture or pattern. This design is found in a cathedral in Monreale, Sicily, Italy.

Mosaic Square Pattern

The mosaic circle pattern is inlaid pieces of stone, wood, glass, leather or straw to make a picture…

The marble mosaic circle pattern is inlaid pieces of stone, wood, glass, leather or straw to make a picture or pattern. This design is found in the San Vitale church in Ravenna, Italy.

Marble Mosaic Circle Pattern

The marble mosaic circle pattern is inlaid pieces of stone, wood, glass, leather or straw to make a…

This modern tobacco jar is a carved wood Norwegian design

Modern Tobacco Jar

This modern tobacco jar is a carved wood Norwegian design

A modern Bryozoan, a group of cells or zooecia seen from above, and a single cell seen from the side.

Bryozoan

A modern Bryozoan, a group of cells or zooecia seen from above, and a single cell seen from the side.

Euglena viridis is a species of unicellular protists in the Euglenaceae family of flagellate organisms.

Euglena

Euglena viridis is a species of unicellular protists in the Euglenaceae family of flagellate organisms.

"A pile of wood 1 ft. long, 4 ft. wide, and 4 ft. high, or 1/8 of a cord, is called a cord foot. Find the number of cords of wood in a pile of 25ft. long, 4 ft. wide, and 6 ft high. (Solution: 4 and 11/16)" -Moore, 1907

Cord Foot of Wood

"A pile of wood 1 ft. long, 4 ft. wide, and 4 ft. high, or 1/8 of a cord, is called a cord foot. Find…

"A bundle of rods or small sticks of wood bound at both ends and in the middle, used in fortification, raising batteries, filling ditches, strengthening ramparts, and making parapets." -Whitney, 1911

Fascine

"A bundle of rods or small sticks of wood bound at both ends and in the middle, used in fortification,…

"Naut.: A square bar of wood or iron, with a shoulder at one end, used to support a topmast or topgallantmast when swayed up into place. The fid passes through a square hole in the heel of its mast, and its ends rest on the trestletrees." -Whitney, 1911

Mast Fid

"Naut.: A square bar of wood or iron, with a shoulder at one end, used to support a topmast or topgallantmast…

"A conical pin of hard wood, from 12 to 24 inches long, and from 1 to 3 inches in diameter at the butt, used to open the strands of rope in splicing." -Whitney, 1911

Setting Fid

"A conical pin of hard wood, from 12 to 24 inches long, and from 1 to 3 inches in diameter at the butt,…

"Files. a, cotter-file when large, and verge- or pivot-file when small; b, square file (parallel or taper); c, banking or watch-pinion file when parallel, and knife-file when tape; d, half-round, nicking, piercing, or round-off file; e, round, gulleting, or rat-tail file; f, triangular, three-square, or saw file; g, equaling, clock-pinion, or endless-screw file when parallel, and slitting, entering, warding, or barrel-hole file when tape; h, cross- or double-half-round file; i, screw-head, feather-edge, or slitting file." -Whitney, 1911

Types of Files

"Files. a, cotter-file when large, and verge- or pivot-file when small; b, square file (parallel or…

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg, under side of segment, and head of larva." -Whitney, 1911

Common Eastern Firefly

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg,…

An illustration of the growth of a Cyclospora Cayetanensis Spore in the nucleus.

Growth of Cyclospora Cayetanensis Spore in Nucleus

An illustration of the growth of a Cyclospora Cayetanensis Spore in the nucleus.

An illustration of the growth of spores of a Cyclospora Cayetanensis.

Formation of Cyclospora Cayetanensis Spores

An illustration of the growth of spores of a Cyclospora Cayetanensis.

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

Formation of Cyclospora Cayetanensis Egg-cell

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

An illustration of the growth of spores of a Cyclospora Cayetanensis.

Formation of Cyclospora Cayetanensis Spores

An illustration of the growth of spores of a Cyclospora Cayetanensis.

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

Formation of Cyclospora Cayetanensis Egg-cell

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

Formation of Cyclospora Cayetanensis Egg-cell

An illustration of the formation of the Cyclospora Cayetanensis egg-cell.

An illustration of the formation of the CCyclospora Cayetanensis spermatozooids

Formation of Cyclospora Cayetanensis Spermatozooids

An illustration of the formation of the CCyclospora Cayetanensis spermatozooids

"A shallow frame of wood or iron used in foundries to contain the sand and patterns employed in molding and casting." -Whitney, 1911

Two-Part Flask

"A shallow frame of wood or iron used in foundries to contain the sand and patterns employed in molding…

An illustration of the fertilization of the egg by the spermatozooids of a Cyclospora Cayetanensis.

Fertilization of Cyclospora Cayetanensis

An illustration of the fertilization of the egg by the spermatozooids of a Cyclospora Cayetanensis.

An illustration of the fusion of egg and sperm-nuclei of a Cyclospora Cayetanensis.

Fusion of Egg and Sperm-nuclei of Cyclospora Cayetanensis

An illustration of the fusion of egg and sperm-nuclei of a Cyclospora Cayetanensis.

An illustration of the division of a zygote of Cyclospora Cayetanensis into two sporoblasts.

Division of Zygote

An illustration of the division of a zygote of Cyclospora Cayetanensis into two sporoblasts.

An illustration of the formation of capsules about two sporoblasts of Cyclospora Cayetanensis.

Formation of Capsules about the Two Sporoblasts

An illustration of the formation of capsules about two sporoblasts of Cyclospora Cayetanensis.

An illustration of the liberation of Cyclospora Cayetanensis spores.

Liberation of Spores

An illustration of the liberation of Cyclospora Cayetanensis spores.

An illustration of Lymphosporidium truttae in the blood cell of a brook trout, which was the cause of the brook-trout epidemic of the 1800s.

Lymphosporidium in Blood Cell

An illustration of Lymphosporidium truttae in the blood cell of a brook trout, which was the cause of…

An illustration of Lymphosporidium truttae in the blood cell of a brook trout with numerous sporoblasts, which was the cause of the brook-trout epidemic of the 1800s.

Lymphosporidium in Blood Cell

An illustration of Lymphosporidium truttae in the blood cell of a brook trout with numerous sporoblasts,…

"In printing, an oblong shallow tray of brass or wood, rarely of zinc, on which the compositor deposits his type." -Whitney, 1911

Printers' Galley

"In printing, an oblong shallow tray of brass or wood, rarely of zinc, on which the compositor deposits…

An illustration of a prisoner drilling a hole in the wall of his prison cell.

Prisoner Drilling Hole

An illustration of a prisoner drilling a hole in the wall of his prison cell.

An illustration of a small fire and smoke.

Small Fire and Smoke

An illustration of a small fire and smoke.

An illustration of a small hand saw.

Hand Saw

An illustration of a small hand saw.

"G, G, garboard strakes; F, frame, K, keel. Nautical, the first range or strake of planks laid on a ship's bottom next the keel. Also called ground-strake." -Whitney, 1911

Garboard Strake

"G, G, garboard strakes; F, frame, K, keel. Nautical, the first range or strake of planks laid on a…

Mount Vernon, located near Alexandria, Virginia, was the plantation home of the first President of the United States, George Washington. The mansion is built of wood in neoclassical Georgian architectural style, and the estate is located on the banks of the Potomac River.

Mt. Vernon

Mount Vernon, located near Alexandria, Virginia, was the plantation home of the first President of the…

"Gastrula of a Chalk-sponge (Olynthus). B, longitudinal section through the axis: g, primitive intestine; o, blastopore; i, inner cell-layer of the body-wall; e, outer cell-layer." -Whitney, 1911

Chalk Sponge Gastrula

"Gastrula of a Chalk-sponge (Olynthus). B, longitudinal section through the axis: g, primitive intestine;…

"Scolopas rusticula, the well known Woodcock, brown, grey, and buff in color, with blackish vermiculations and blotches above and bars below, has two transverse buff stripes on the black hind-crown. It inhabits Northern and Central Europe and Asia-with Atlantic Islands and Japan." A. H. Evans, 1900

Woodcock

"Scolopas rusticula, the well known Woodcock, brown, grey, and buff in color, with blackish vermiculations…

Mount Vernon, located near Alexandria, Virginia, was the plantation home of the first President of the United States, George Washington. The mansion is built of wood in neoclassical Georgian architectural style, and the estate is located on the banks of the Potomac River.

Mount Vernon

Mount Vernon, located near Alexandria, Virginia, was the plantation home of the first President of the…

"Make thee an ark of gopher wood; rooms shalt thou make in the ark, and shalt pitch it within and without with pitch." Genesis 6:14 KJV

Noah Building the Ark

"Make thee an ark of gopher wood; rooms shalt thou make in the ark, and shalt pitch it within and without…

"And they came to the place which God had told him of; and Abraham built an altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar upon the wood." Genesis 22:9 KJV

Abraham Offering Isaac

"And they came to the place which God had told him of; and Abraham built an altar there, and laid the…

Mechanical drawing convention for identifying wood. The left side of the illustration shows an endgrain pattern; the right side shows the figure of the wood. Using conventionalized patterns to identify materials is called section lining.

Wood

Mechanical drawing convention for identifying wood. The left side of the illustration shows an endgrain…

Wood Meadow Grass (Poa nemoralis) grows from eighteen inches to two feet high. It has a perennial, creeping root and an erect, slender, smooth stem. The upper sheath is no longer than its leaf, with a very short ligule, the base of the floret having a silky web suspending the calyx. The leaves are light green. The grass is common in light shady places and appears as a tall, rank grass, with a long, finely-arched panicle.

Wood Meadow Grass

Wood Meadow Grass (Poa nemoralis) grows from eighteen inches to two feet high. It has a perennial, creeping…