A political and religious leader of Muslim tribes. He lead an anti-Russian resistance in the Caucasian…
The launcher of women's political advocacy. She was considered to be the first major American women's…
"Scheme showing the essential relations of the parts of a nervous system: 1, the sensory end organ (epithelial);…
"Nervous System of the Aplysia, a Gasteropodous Mollusc: c, cerebral ganglia; g, thoracle or sub-aesophageal…
"Diagram showing the muscular system. M, ventral, N, dorsal valve; l, loop; V, mouth; Z, extremity of…
"The coil is of flat, rectangular shape, with a narrow central opening just large enough to allow one…
"When a current is passed through the instrument it causes one end of the movable system to tilt downwards,…
A gear system with a rack gear and worm gear. Used to conovert circular motion to rectilinear motion.
A gear system with a rack gear and small pinion gear. Used to conovert circular motion to rectilinear…
"In the year 1589 the stocking-frame, the machine which mechanically produces the looped stitch in hosiery,…
"Half of the lower surface of Aurelia aurita. The transparent tissues allow the enteric cavities and…
"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets;…
"A class of radiate animals, the highest in organisation of the great division of the animal kingdom.…
"Ventral surface of the entosternum of Limulus polyphemus, Latr. NF, neural fossa protecting the aggregated…
"Diagram of the arterial system of A, Scorpio, and B, Limulus. The Roman numerals indicate the body…
"Galeodes sp., one of the Solifugae. Ventral view with the appendages cut off at the base. I to VI,…
"Ovaries of Queen and Workers (Apis). A, Abdomen of queen, under side. P, Petiole. o, o, Ovaries. hs,…
"Digestive system of the common Fowl. o, Gullet; c, Crop; p, Proventriculus; g, Gizzard; sm, Small intestine;…
"In order to produce, on the catoptric system, a fixed light showing all round the circle, a number…
"System of Wheels.—As the wheel and axle is only a modification of the simple lever, so a system…
"Relative distance of the Planets. Having now given a short account of each planet composing the solar…
"Elliptical Orbits.—It has been supposed that the Sun's attraction, which constitutes the Earth's…
"The elliptical circle being supposed to be the Earth's orbit, with the Sun, S, in one of the foci.…
Element of Nervous System. a: Sensory fiber; b: Motor fiber; c: Center; f: End of sensory fiber; m:…
Magellania flavescens. Diagram showing the muscular system. M, ventral; N, dorsal valve; l, Loop; V,…
Lingula anatina. Diagram showing the muscular system. A, dorsal; B, ventral valve; p, penduncle; e,…
Diagram of nervous system of Crania; from the dorsal side. The nerves running to the dorsal parts are…
When Henry VIII became king in 1509, Wolsey's affairs prospered. He became Canon of Windsor, Berkshire…
Philip sought an alliance with the Kingdom of England, marrying the Catholic Queen Mary I of England…
(1777-1852) An American statesman who served in both the House of Representatives and Senate and is…