Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with axes…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with both…
Plan of the body in cross-section. The systems in the body are arranged in a certain way which is the…
Catholic system of dragooning the French protesants after the revocation of the edict of the Nantes,…
"Longitudinal section through fertilized ovule of a spruce. p, pollen grains; t, pollen tubes; n neck…
"The modern system of cotton manufacture dates no further back than back 1760. Prior the mechanical…
"In a system of pulleys (figs. 3,4) in which the same string passes round any number of pulleys, and…
"In a system in which each pulley hangs by a separate cord and the strings are parallel (fig. 5), there…
"The Lungs. 1, Summit of lungs. 2, Base of lungs. 3, Trachea. 4, Right bronchus. 5, Left bronchus. 6,…
"(1798-1859), an American educator who helped to establish the present common school system in the United…
"Superficial arteries and nerves of the face and neck. 1, Temporal artery; 2, artery behind the ear;…
"Nerves of the had. 1, Nerves of the skin; 2, tendons; 3, arteries of the palm of the hand; 4, elbow…
Labels: O, esophagus; S, stomach; SI, small intestine; LI, large intestine, Sp spleen; L, liver (raised…
The opening part of the stomach where the esophagus joins it is called the cardiac opening; the one…
Showing the connection of the small intestine to the thoracic duct by the lacteals lying in the mesentery.…
The stomach and intestines. Labels: 1, stomach; 5, 7, 8, 9, 10, 11, large intestine; 3, small intestine;…
A diagram of an annulosa showing its external skeleton made up of segments or rings arranged along a…
In birds the muscles system is remarkable for their marked line of attachment to their tendons. Labels:…
In fish the chief masses of the muscular system are disposed on each side of the trunk in a series of…
The Annulosa and Mollusca are furnished with a distinct alimentary canal that does not open into the…
A diagram of the organs of digestion. Labels:1, The upper jaw. 2, The lower jaw. 3, The tongue. 4, The…
The respiratory apparatus of other mammals is similar to humans in both structure and function. The…
In birds the lungs are confined to the back wall of the chest. They are not separated into lobes, but…
In birds the lungs are confined to the back wall of the chest. They are not separated into lobes, but…
In the class of Crustacea there is a single ventricle, which receives the blood from the gills and propels…
Insects have neither arteries nor veins. The circulation, such as it is, is animated by the action of…
In high orders of Mollusca the circulation resembles that of fish. Shown is the heart and arteries of…
A diagram of the circulation of a frog. Labels: 1, The pericardium. 2, The single ventricle. 3, The…
A diagram of the circulation of a fish. Labels: 1, The pericardium. 2, The single auricle. 3, The single…
The circulatory organs. Labels: 1, The left auricle. 2, The right auricle. 3, The left ventricle. 4,…
A section of the brain and spinal column. Labels: 1, The cerebrum (large brain). 2, The cerebellum (small…
A back view of the brain and spinal cord. Labels: 1, The cerebrum. 2, The cerebellum. 3, The spinal…
The sympathetic ganglions and their connection with other nerves. Labels: A, The semilunar ganglion…
In Amphibians the nervous system is but slightly developed. The cerebrum is small; the cerebellum is…
The nervous system of insects is composed primarily of a double series of ganglions united by longitudinal…
In the nervous system of the centipede the ganglions are arranged in pairs of nearly equal size, except…
In the Mollusca are found the ganglions and connective arrangement, with both sensitive and motor nerves,…
In the Radiata, the starfish manifests one of the simplest forms of nervous systems. it consists of…
"Streamlet branchings of the abnormal type found in the area in and about the Pomperaug Valley. a and…
"Diagram showing tissue-systems in young stem of castor-oil plant (Ricinus communis), as seen in cross-section.…
A representation of the brain, spinal cord and spinal nerve. Labels: 1, The cerebrum. 2. The cerebellum.…
A diagram illustrating the circulation of the blood. Labels: A, vena cava descending (superior); Z,…
The stomach and intestines. Labels: 1, stomach; 2, duodenum; 3, small intestine; 4, termination of the…
The human nervous system includes the brain, spinal cord, and the nerves. Labels: A, cerebrum; B, cerebellum.
The olfactory system. Labels: a, b, c, d, interior of the nose, which is lined by a mucous membrane;…
View of the cerebrospinal axis of the nervous system. The right half of the cranium and trunk of the…