Early stages in development of human brain. 1, 2, 3, are from an embryo about seven weeks old; 4, about…
Side view of fetal brain at six months, showing commencement of formation of the principal fissures…
A thin diaphanous shell in which species of the genus Limnaea live. They can be found in the fresh waters…
"Dipping needle, a magnetic needle mounted on a horizontal support, and free to move in a vertical plane.…
"The Staircase-shell is recognized by its deep umbilicus, wide and funnel-shaped, in the interior of…
"The Staircase-shell is recognized by its deep umbilicus, wide and funnel-shaped, in the interior of…
"The Money Cowry is a little, oval shell, depressed, flat below, with very thick edges and slightly…
A cud-chewing animal of the Old World, especially adapted by nature to travel waste deserts with scarcity…
An illustration of the legend of Alfred the Great letting the cakes burn because he was preoccupied…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"The Volutes live in the sands near the shore; sometimes they are found high and dry, left by the retreating…
"Cuttlefish are probably the most interesting animals of [the cephalopoda] order. They live for five…
"The Common Calmar or Squid. They propel themselves backward through the water with great velocity,…
The anti-slavery novel by Harriet Beecher Stowe was published in 1852 and had an effect on the view…
"The Common Calmar or Squid. They propel themselves backward through the water with great velocity,…
"The king of the herrings is from three to four feet in length, of a general silvery color, spotted…
"'Liberty Enlightening the World,' a gift from the French Republic to the Greatest Republic. Height…
A poster with facts and images of France from the Consulate to the World War.
"Francis Joseph I (1830-1916), emperor of Austria and king of Hungary, and next to the last of the Hapsburg…
(1712-1786) King of Prussia from the Hohenzollern dynaasty, known as the founder of Germany's military…
In Longfellow's poem, an angel took King Robert's place and made Robert the royal jester until he admitted…
A legend of the knight Roland, who fearlessly claimed his rights by taking food and drink straight from…
Gustavus Vasa hiding out with peasants in the story about the king from "The Red True Story Book" by…
"The Tortoise will continue to live on for six months after it is deprived of its brain."
"When the female has laid her eggs, the male takes them and piles them on her back." Her skin becomes…
"Salamanders have the honor of appearing prominently in fabulous narratives. The Greeks believed that…
"The Great Black-backed Gull is one of the most remarkable among sea-gulls. It is pure white, with a…
The Screamers are inhabitants of South America. They live isolated, in pairs, and are mild and peaceful…
The Screamers are inhabitants of South America. They live isolated, in pairs, and are mild and peaceful…
"These birds have as distinctive features a short beak, a small head, a round and massive body, bare…
"Oven-birds live singly or in pairs, in the plains of Chili, Brazil and Guiana."
"The King Bird of Paradise is a rare bird, a native of the islands of Molucca."
"In the first rank of the Warblers stands the Nightingale, celebrated all over the world for its song,…
"When pressed by hunger it shows no fear in attacking live animals, which makes it dreaded by the shepherds…
"The King-vulture is distinguished from the condor by the collar-ruff which surrounds the neck being…
"Samson Killing the Lion. By Albrecht Dürer. From the wood engraving." -Heath, 1901
"Christ Driving Out the Money-Changers. By Albrecht Dürer. From the 'Little Passions.' Printed…
Orthographic projection drawing of a candlestick or upright telephone. An orthographic projection is…
Orthographic projection drawing of an arm-chair. An orthographic projection is the method of representing…
Orthographic projection drawing of stairs. An orthographic projection is the method of representing…