"Bernicla nigricans. Black Brant. Bill, feet, and claws black; iris brown. Head and neck all around,…
"Bernicla nigricans. Black Brant. Bill, feet, and claws black; iris brown. Head and neck all around,…
"Bernicla brenta. Brant Goose. Bill, feet, and claws black; iris brown. Head and neck all around, and…
"Mareca americana. American Wigeon. Bald-pate. Bill grayish-blue, with black tip and extreme base; feet…
"Aix sponsa. Wood Duck. Summer Duck. "The Bride." Adult Male: Bill pinkish-white, with lake-red base,…
"Fuligula vallisneria. Canvas-back. Adult male: The head close-feathered. Bill high at the base and…
"Fuligula vallisneria. Canvas-back. Adult male: The head close-feathered. Bill high at the base and…
"Fuligula vallisneria. Canvas-back. Adult male: The head close-feathered. Bill high at the base and…
"Clangula albeola. Buffle-head. Butter-ball. spirit-duck. Dipper. Bill with nostrils rather behind than…
"Camptolaemus labradorius. Labrador Duck. Pied Duck. Adult male: Bill black with orange at base and…
"Somateri mollissima. Somateri dresseri. Common Eider. Bill gibbous at base of upper mandible; outline…
"Oidemia perspicillata. Surf Duck. Sea Coot. Adult male: Bill as above, singularly variegated in color,…
"Mergus merganser. Merganser. Goosander. Nostrils near middle of bill. Frontal feathers extending acutely…
"Mergus serrator. Red-breasted Merganser. Nostrils near base of bill. Frontal feathers extending obtusely…
"Phalacrocorax bicristatus. Red-Faced Cormorant. Frontal feathers not reaching base of the culmen, the…
"Chroicocephalus atricilla. Laughing Gull. Black-headed Gull. Bill longer than middle toe and claw,…
"Sterna dougalli. Roseate Tern. Paradise Tern. Bill about as long as head or foot, straight, slender,…
"Sterna (T.) maxima. Cayenne Tern. Royal Tern. Adult in summer: Pileum glossy greenish-black, not extending…
"Sterna aleutica. Aleutian Tern. Bill of ordinary shape, as in hirundo, macrura, etc., entirely black.…
"Diomedea brachyura. Short-tailed Albatross. Bill 5.00 or 6.00 inches long, with long, with moderately…
"Priocella tenuirostris. Slender-billed Fulmar. Adult: Plumage white, with clear pearly-blue mantle,…
The Parthenon is a temple of the Greek Goddess Athena, who was considered as the protector of the city…
The Temple of Neptune is located in the Graeco-Roman ancient city of Paestum, located in the Campania…
The Trajan's column is a monument in honor of Emperor Trajan located in Rome, Italy. The column is a…
"Fratercula corniculata Horned Masking Puffin. Crown of head grayish-black, narrowing to a point at…
"Lunda cirrata. Tufted Puffin. Crests about 4 inches long, straw-yellow, some of the posterior feathers…
"Ceratorhina monocerata. Unicorn Auk. Horn-bill Auk. Adults in summer: Bill orange-yellow. Culmen and…
"Ceratorhina monocerata. Unicorn Auk. Horn-bill Auk. In winter: Bill orange-yellow. Culmen and base…
"Simorhynchus pusillus. Least Auk. Knob-nosed Auk. Bill small and simple, but stout for its length,…
"Simorhynchus cristatellus. Crested Auk. Snub-nosed Auk. Bill fundamentally small and simple, compressed-conic,…
"Brachyrhamphus craverii. Craveri's Murrelet. Entire upper parts unvararied cinereous, slightly darker…
"Part of the superior vertical semicircular canal, showing its ampulla (which is the dilatation of the…
"Glottis, or opening of trachea in the mouth; a, base of tongue; b, b, horns of hyoid bone; c, rima…
"Simorhynchus pusillus. Least Auk. Knob-nosed Auk. Bill small and simple. but stout for its length,…
"Simorhynchus pusillus. Least Auk. Knob-nosed Auk. Bill small and simple. but stout for its length,…
"Alle. Sea Dove. Size small. Bill very short, stout, and obtuse, as well as high at base, the sides…
"Synthliborhamphus antiquus. Nipper-nosed Murrelet. Bill somewhat as in Brachyrhamphus, but stouter…
"Bill larger than Pigeon Guillemot, 1.5-1.70 along culmen, along gape 2.20, from feathers on side of…
"Bill black; bill along culmen 1.75; gape 2.50; gonys 1.15; depth at base .55; width .30." Elliot Coues,…
"Bill averaging somewhat longer, about 1.90; culmen, commissure, and gonys nearly straight; upper mandible…
"Lomvia arra. Thick-billed Guillemot. Arrie. Bill short, stout, wide, deep; culmen curved throughout;…
"Anthus Ludovicianus. Louisiana Pipit. American Titlark. Brown Lark. Wagtail. Bill blackish, pale at…
"Buteo vulgaris. hawk of Europe, Upper parts dark brown, very variable in shade according to season…
"North American White Pelican. Bill and feet ordinarily yellow; much reddened in the breeding season,…
"On base AB, 3 1/2" long construct an equilateral triangle, using the 60-degree triangle. Bisect the…
"ABCD to a new base A'B'. With radii AC and BC describe intersection arcs from centers A'B', locating…
This apparatus features an annular graduated base holding the base parallel to the brain of the subject.…
A folding bed is a piece of furniture used as a place to sleep. Beds usually consists of a mattress…
An invalid chair to facilitate entry and exit from the chair by an invalid comprises a chair base, a…
A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light…
The illustration shows the cylinder rolled out in a tangent plane of the base to create a development…
An image of a hexagonal pyramid stretched out. The length of the edges are equal plane, and intersects…
The illustration of a rectangular pyramid unfolded by creating edges equal length to the base and meeting…
A rolled out image of a cone by dividing the base in equal parts and arcs to measure the true lengths.
A development or rolled out oblique cone using triangulation. The method of triangulation is done by…
"An oblique cone connecting two parallel pipes of different diameters... the true size of the base is…
A typical phone call, traditionally, is placed by picking the phone handset up off the base and holding…
Development and top completion exercise problem of the cone by dividing the base into equal parts and…
A sample exercise problem to complete the top part and create a stretched out image of the oblique hexagonal…
A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light…