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Italian Rye Grass (Lolium Italicum) differs from the Perennial Rye Grass in the florets having long, slender awns and from bear darnel in the glumes being shorter than the spikelet. The Italian Rye Grass turfts less than the Perennial Rye and the stems grow higher. The Italian Rye's leaves area light green and it gives an early, quick, successive growth until late in the fall. The soils best adapted to the Italian Rye seem to be moist, fertile, and tenacious.

Italian Rye Grass

Italian Rye Grass (Lolium Italicum) differs from the Perennial Rye Grass in the florets having long,…

Italian Rye Grass (Lolium Italicum) differs from the Perennial Rye Grass in the florets having long, slender awns and from bear darnel in the glumes being shorter than the spikelet. The Italian Rye Grass turfts less than the Perennial Rye and the stems grow higher. The Italian Rye's leaves area light green and it gives an early, quick, successive growth until late in the fall. The soils best adapted to the Italian Rye seem to be moist, fertile, and tenacious. A magnified spikelet is shown here.

Italian Rye Grass

Italian Rye Grass (Lolium Italicum) differs from the Perennial Rye Grass in the florets having long,…

Hungarian Grass (Panicum Germanicum) is an annual forage plant. It germinates readily, withstands the drought remarkably, remaining green even when other vegetation is parched up. If its development is arrested by dry weather, the east rain will restore it to vigor. It has numerous succulent leaves, which furnish an abundance of green fodder. Hungarian Grass flourishes in somewhat light and dry soils, though it attains its greatest luxuriance in soils of medium consistency and well-mannered. This grass is thought to contain a somewhat higher percentage of nutriment than the common millet. It is a leafy plant and remains green until the seeds mature.

Hungarian Grass

Hungarian Grass (Panicum Germanicum) is an annual forage plant. It germinates readily, withstands the…

Circulation of fresh air was critical in coal mining. In spite of passages created to control this, ther were always side rooms through which no circulation could be effected. These areas were where explosive "fire-damp", or light carbide of hydrogen, evolved spontaneously from the coal, and often caused fatal accidents to the miners.

Explosion in a Coal Mine

Circulation of fresh air was critical in coal mining. In spite of passages created to control this,…

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes are not capable of forming an image or picture of external objects. They only make the animal able to distinguish between light and darkness or shadow. This diagram shows the simple eye or a jellyfish.

Sense of Sight

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes…

The Browning M1919 is a .30 caliber medium machine gun family widely used during the 20th century. It was used as a light infantry, coaxial, mounted, aircraft, and anti-aircraft machine gun by the U.S. and many other countries, especially during World War II, the Korean War, and the Vietnam War. Although it began to be superseded by newer designs in the later half of the century (such as by the M60 machine gun), it remained in use in many North Atlantic Treaty Organization (NATO) countries and elsewhere for much longer. It is very similar in design to the larger .50-caliber M2 Machine Gun, which is also a Browning-designed weapon and is still in NATO service.

Browning Machine Gun

The Browning M1919 is a .30 caliber medium machine gun family widely used during the 20th century. It…

The 105 mm Howitzer M2A1(M101) was the standard light field howitzer for the United States in World War II, seeing action in both European and Pacific theatres. Entering production in 1941, it quickly entered the war against the Imperial Japanese Army in the Pacific, where it gained a reputation for its accuracy and powerful punch. The M101 fired 105 mm high explosive (HE) semi-fixed ammunition and had a range of 11,200 metres (12,200 yd), making it suitable for supporting infantry.

105 mm Howitzer M2A1

The 105 mm Howitzer M2A1(M101) was the standard light field howitzer for the United States in World…

"Figure 10- Dermestes lardarius (Larder beetle) enlarged. a, larva; b, an enlarged hair; c, imago." Elliot Coues, 1884. The Larder beetle is small, black to brown in color with a light yellow spotted band around its abdomen. The legs and undersides are covered with yellow hairs.

Larder Beetle Larvae and Imago

"Figure 10- Dermestes lardarius (Larder beetle) enlarged. a, larva; b, an enlarged hair; c, imago."…

"Azure, a ray of the sun issuing out of the dexter corner of the escutcheon. The lines on each side are not noticed. RAY. A stream of light proceeding from a luminous body." -Hall, 1862

Ray of Sun

"Azure, a ray of the sun issuing out of the dexter corner of the escutcheon. The lines on each side…

The Large Head of Christ is a chiaroscuro (contrast between light and dark) woodcut that was created by German artist Albrecht Dürer's.

Large Head of Christ

The Large Head of Christ is a chiaroscuro (contrast between light and dark) woodcut that was created…

This U.S. Mailbox is shown attached to a light pole.

U.S. Mailbox

This U.S. Mailbox is shown attached to a light pole.

"British Grenadier of 1745, blowing his fuse to light a grenade." -Whitney, 1911

British Grenadier

"British Grenadier of 1745, blowing his fuse to light a grenade." -Whitney, 1911

"Bill shorter than head, comparatively stout at base, very acute at tip, the culmen quite convex, the gonys just appreciably concave, Tarsus a little longer that the middle tow an claw. 3d and 4th primaries about equal and longest, 5th and 6th successively slightly shorter, 2 d equal to 7th, 1st equal to penultimae secondary in the closed wing. Entire upper parts, including surfaces of wings and tail, uniform dull pale grayish-brown, with narrow, faintly-rusty edge of the wing-coverts and inner quills, and equally obscure whitish tipping of the tail-feathers. No maxillary nor auricular streaks; no markings about the head except slight speckling on the cheeks. Under parts brownish-white, palest (nearly white) on the belly and throat, more numerous small arrow-head spots on the color of the back. Bill light-colored at base below." Elliot Coues, 1884

Arizona Thrasher

"Bill shorter than head, comparatively stout at base, very acute at tip, the culmen quite convex, the…

This gas-chandelier is richly ornamented with a naturalistic design. It is a branched decorative ceiling mounted light fixture.

Gas-Chandelier

This gas-chandelier is richly ornamented with a naturalistic design. It is a branched decorative ceiling…

The light park phaeton is an early 19th century carriage that is drawn by one or two horses. It is constructed to be light and simple, free from carvings and ornamental iron-work.

Light Park Phaeton

The light park phaeton is an early 19th century carriage that is drawn by one or two horses. It is constructed…

This gas lamp has three burners. It produces light by using gasoline fuel.

Gas Lamp

This gas lamp has three burners. It produces light by using gasoline fuel.

This cashmere covering is used for a couch. The design is stitched over a light blue silk color, which gives it a delicate tone.

Cashmere Covering

This cashmere covering is used for a couch. The design is stitched over a light blue silk color, which…

This legere chair is known for its lightness and gracefulness. It was designed in the 1850s.

Legere Chair

This legere chair is known for its lightness and gracefulness. It was designed in the 1850s.

This carriage lamp is made out of cut glass and set in silver. It is used to light a carriage.

Carriage Lamp

This carriage lamp is made out of cut glass and set in silver. It is used to light a carriage.

The fan light is intended to be placed over a doorway or window.

Fan Light

The fan light is intended to be placed over a doorway or window.

The chandelier is a ceiling mounted light fixture. This chandelier is made out of white glass.

Chandelier

The chandelier is a ceiling mounted light fixture. This chandelier is made out of white glass.

The chandelier is a ceiling mounted light fixture.

Chandelier

The chandelier is a ceiling mounted light fixture.

The candlestick is used to light a room or for decorative purposes.

Candlestick

The candlestick is used to light a room or for decorative purposes.

This chandelier is designed in cut glass, with thirty-two lights. It is a type of a ceiling mounted light fixture.

Chandelier

This chandelier is designed in cut glass, with thirty-two lights. It is a type of a ceiling mounted…

This chandelier is designed with foliage. It is a ceiling mounted light fixture.

Chandelier

This chandelier is designed with foliage. It is a ceiling mounted light fixture.

This chandelier is designed is in the Renaissance style. It is a ceiling mounted light fixture.

Chandelier

This chandelier is designed is in the Renaissance style. It is a ceiling mounted light fixture.

The carriage lamp is used to light a carriage.

Carriage Lamp

The carriage lamp is used to light a carriage.

The carriage lamp is used to light a carriage.

Carriage Lamp

The carriage lamp is used to light a carriage.

This gas chandelier is operated using gas and has fifteen lights. It is a light fixture that is mounted to the ceiling.

Gas Chandelier

This gas chandelier is operated using gas and has fifteen lights. It is a light fixture that is mounted…

This candelabrum is comprised of four branches of candle holders. It is used to illuminate a room or an area.

Candelabrum

This candelabrum is comprised of four branches of candle holders. It is used to illuminate a room or…

This cover is made out of cambric, a type of light weight cotton cloth used for lace and needlework. This cover has a oval floral wreath design with a floral grouping in the center.

Cover

This cover is made out of cambric, a type of light weight cotton cloth used for lace and needlework.…

This chandelier is made out of brass. It has an elongated design with chains holding a plate at the base, with a light in the center of the plate.

Chandeliers

This chandelier is made out of brass. It has an elongated design with chains holding a plate at the…

Color flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of the flag; the triangle contains three horizontal bands of black (top), light blue, and white, with a yellow rising sun in the black band.

Flag of Antigua and Barbuda, 2009

Color flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of…

Black and white outline flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of the flag; the triangle contains three horizontal bands of black (top), light blue, and white, with a yellow rising sun in the black band

Flag of Antigua and Barbuda, 2009

Black and white outline flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based…

Color flag of Botswana. Light blue with a horizontal white-edged black stripe in the center.

Flag of Botswana, 2009

Color flag of Botswana. Light blue with a horizontal white-edged black stripe in the center.

Black and white outline flag of Botswana. Light blue with a horizontal white-edged black stripe in the center

Flag of Botswana, 2009

Black and white outline flag of Botswana. Light blue with a horizontal white-edged black stripe in the…

Color flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white isosceles triangle based on the hoist side bearing a red five-pointed star in the center.

Flag of Djibouti, 2009

Color flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white…

Black and white outline flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white isosceles triangle based on the hoist side bearing a red five-pointed star in the center

Flag of Djibouti, 2009

Black and white outline flag of Djibouti. Two equal horizontal bands of light blue (top) and light green…

Color flag of Ethiopia. Three equal horizontal bands of green (top), yellow, and red, with a yellow pentagram and single yellow rays emanating from the angles between the points on a light blue disk centered on the three bands; Ethiopia is the oldest independent country in Africa, and the three main colors of her flag were so often adopted by other African countries upon independence that they became known as the pan-African colors.

Flag of Ethiopia, 2009

Color flag of Ethiopia. Three equal horizontal bands of green (top), yellow, and red, with a yellow…

Color flag of Palau. Light blue with a large yellow disk (representing the moon) shifted slightly to the hoist side.

Flag of Palau, 2009

Color flag of Palau. Light blue with a large yellow disk (representing the moon) shifted slightly to…

Black and white outline flag of Palau. Light blue with a large yellow disk (representing the moon) shifted slightly to the hoist side

Flag of Palau, 2009

Black and white outline flag of Palau. Light blue with a large yellow disk (representing the moon) shifted…

Color flag of Sierra Leone. Three equal horizontal bands of light green (top), white, and light blue.

Flag of Sierra Leone, 2009

Color flag of Sierra Leone. Three equal horizontal bands of light green (top), white, and light blue.

Black and white outline flag of Sierra Leone. Three equal horizontal bands of light green (top), white, and light blue

Flag of Sierra Leone, 2009

Black and white outline flag of Sierra Leone. Three equal horizontal bands of light green (top), white,…

Color flag of Somalia. Light blue with a large white five-pointed star in the center; blue field influenced by the flag of the UN.

Flag of Somalia, 2009

Color flag of Somalia. Light blue with a large white five-pointed star in the center; blue field influenced…

Black and white outline flag of Somalia. Light blue with a large white five-pointed star in the center; blue field influenced by the flag of the UN

Flag of Somalia, 2009

Black and white outline flag of Somalia. Light blue with a large white five-pointed star in the center;…

Color flag of Tuvalu. Light blue with the flag of the UK in the upper hoist-side quadrant; the outer half of the flag represents a map of the country with nine yellow five-pointed stars symbolizing the nine islands.

Flag of Tuvalu, 2009

Color flag of Tuvalu. Light blue with the flag of the UK in the upper hoist-side quadrant; the outer…

Black and white outline flag of Tuvalu. Light blue with the flag of the UK in the upper hoist-side quadrant; the outer half of the flag represents a map of the country with nine yellow five-pointed stars symbolizing the nine islands

Flag of Tuvalu, 2009

Black and white outline flag of Tuvalu. Light blue with the flag of the UK in the upper hoist-side quadrant;…

"Picea, Silver Fir. Fig. 60. Tree, 100-200 ft: trunk 6-8 ft. in dia.: lvs. flat, distichously spreading, dark green and lustrous above, silvery white below: cones slender, cylindrical, light green to dark purple, 5-6 in. long; bracts slightly longer than their scales. Mts. of Cent. and S. Eu., often gregarious.- Wood esteemed and much used; yields Strasburg turpentine. Dwarf forms, with erect and pendulous and with much abbreviated branches, are common in gardens. Not perfectly hardy in New England." L.H. Bailey, 1917

Silver Fir Tree Cone

"Picea, Silver Fir. Fig. 60. Tree, 100-200 ft: trunk 6-8 ft. in dia.: lvs. flat, distichously spreading,…

"Long-billed Marsh Wren. T. palustris. Above clear brown, unbarred, the middle of the back with a large black patch sharply streaked with white (these white stripes sometimes deficient). Crown of head usually darker that the back, often quite blackish, and continuous with the black interscapular patch. a dull white superciliary line. Wings fuscous, the inner secondaries blackish on the outer webs, often barred or indented with light brown. Tail evenly barred with fuscous and the color of the back. Under parts white, usually quite pure on the belly and middle line of the breast and throat, but much shaded with brown on the sides, flanks, and crissum. Bill blackish above, pale below; feet brown." Elliot Coues, 1884

Long-billed Marsh Wren

"Long-billed Marsh Wren. T. palustris. Above clear brown, unbarred, the middle of the back with a large…

Thor, Loki, and two children, Thialfi and Roska travel to Giant Land where they find what they think is a house. They sleep in the largest room. When they wake up, the sun's light shows that they were sleeping in the thumb of a giant's glove.

Sleeping in the Giant's Glove

Thor, Loki, and two children, Thialfi and Roska travel to Giant Land where they find what they think…

"Relative positions of the earth and the sun on March 21 (spring equinox) and September 21 (autumn equinox) as seen from the position occupied by the earth on June 21 (summer solstice). Rays of light and heat meet the earth vertically on the Equator, and the days and nights are everywhere of equal length." -Wiswell, 1913

Spring Equinox and Autumn Equinox

"Relative positions of the earth and the sun on March 21 (spring equinox) and September 21 (autumn equinox)…

"In the gold-leaf electroscope (invented by Bennet in 1787), two light strips of gold-leaf hang from the lower end of a metal rod, which passes vertically through an opening in the top of a glass bottle and expands above into a plate. If a piece of rubbed sealing-wax or other electrified body be brought near the plate, the gold leaves will repel each other and diverge ... A cylinder of wire gauze placed just inside the glass case, improves the action of the instrument." -Hazeltine, 1894

Gold Leaf Electroscope

"In the gold-leaf electroscope (invented by Bennet in 1787), two light strips of gold-leaf hang from…

"The first street light in America. Early in 1795 several large cressets were placed on the corners of Boston's most frequented street. Pine-knots were placed in these fire baskets by the night watchman." -Bodmer, 1917

First Street Light in America

"The first street light in America. Early in 1795 several large cressets were placed on the corners…

"The first Réverbère --oil lantern-- with a metal reflector, used to light the streets of Paris. It was invented by Bourgeois de Châteaublanc in 1765, and used until the introduction of gas." -Bodmer, 1917

Réverbère Oil Lamp

"The first Réverbère --oil lantern-- with a metal reflector, used to light the streets…

"Argand got his first suggestion for his burner-- invented in 1780-- from this style of alcohol lamp, then in general use throughout France." -Bodmer, 1917

Alcohol Lamp

"Argand got his first suggestion for his burner-- invented in 1780-- from this style of alcohol lamp,…

"Hanging lamp from Nushagak in Southern Alaska. It is suspended from the framework of the tent by cords. Oils and fats from northern animals give a clear and steady light, and Eskimo lamps are frequently praised by travelers." -Bodmer, 1917

Eskimo Lamp

"Hanging lamp from Nushagak in Southern Alaska. It is suspended from the framework of the tent by cords.…

"Edison's first lamp with a filament of bamboo fibre." -Bodmer, 1917

Edison's First Light Bulb

"Edison's first lamp with a filament of bamboo fibre." -Bodmer, 1917

"The carbon lamp-- the oldest form of incandescent lamp." -Bodmer, 1917

Carbon Light Bulb

"The carbon lamp-- the oldest form of incandescent lamp." -Bodmer, 1917

"The Tantalum lamp developed just before the Mazda lamp." -Bodmer, 1917

Tantalum Light Bulb

"The Tantalum lamp developed just before the Mazda lamp." -Bodmer, 1917

"Standard Mazda lamp-- the highest development of the incandescent lamp." -Bodmer, 1917

Standard Mazda Light Bulb

"Standard Mazda lamp-- the highest development of the incandescent lamp." -Bodmer, 1917