"The dotted line shows the course of the branchial artery." — Blaisedell, 1904

Brancial artery

"The dotted line shows the course of the branchial artery." — Blaisedell, 1904

"The dotted line shows the course of the right femoral artery." — Blaisedell, 1904

Femoral artery

"The dotted line shows the course of the right femoral artery." — Blaisedell, 1904

"A. Bacilli mingled with blood corpuscules from the blood of a guinea-pig; some of the bacilli dividing. B. The rodlets after three hours' culture in a drop of aqueos huor. They grow out into long leptothrix-like filaments, which become separate later, and spores are developed in the segments." — Encyclopedia Britannica, 1910

Bacillis Anthracis

"A. Bacilli mingled with blood corpuscules from the blood of a guinea-pig; some of the bacilli dividing.…

Blood corpuscles. Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves in rouleaux; a, a, colorless corpuscles; B, red corpuscles more magnified and seen in focus; E, a red corpuscle slightly out of focus. Near the right-hand top corner is a red corpuscle seen in three-quarter face, and at C one seen edgewise. F,G,kH,I, white corpuscles highly magnified.

Blood Cells

Blood corpuscles. Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves…

Diagram showing the circulation of blood in the heart. Let <em>a</em> represent the right side of the heart, <em>c</em>the left side, <em>b</em> the lungs, and <em>d</em> the general system of the body. The arrows point in the direction in which the blood flows. In all the shaded part the blood is dark (oxygen-poor), and in the part that is not shaded it is red (oxygen-rich).

Blood Circulation in the Heart

Diagram showing the circulation of blood in the heart. Let a represent the right side of the…

"Red and white blood corpuscles." &mdash; Richardson, 1906

Blood Corpuscles

"Red and white blood corpuscles." — Richardson, 1906

Blood corpuscles (cells). Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves in rouleaux; a, a, colorless corpuscle; B, red corpuscles more magnified and seen in focus; E, a red corpuscle slightly out of focus. Near the right -hand top corner is a red corpuscle seen in three-quarter face, and at C one is seen edgewise. F, G, H, I, white corpuscles highly magnified.

Blood Corpuscles

Blood corpuscles (cells). Labels: A, magnified about 400 diameters. The red corpuscles have arranged…

Human red blood corpuscles. Highly magnified.

Blood Corpuscles

Human red blood corpuscles. Highly magnified.

The intracellular network of colorless and colored blood corpuscles. Labels: A, The colorless blood corpuscles showing the intracellular network, and two nuclei with intranuclear network. B. Colored blood corpuscle showing the intracellular network of fibrils.

Intracellular Network of Blood Corpuscles

The intracellular network of colorless and colored blood corpuscles. Labels: A, The colorless blood…

"Showing how the circulation of blood in the web of a frog's foot looks as seen under the microscope." &mdash; Blaisedell, 1904

Circulation of blood

"Showing how the circulation of blood in the web of a frog's foot looks as seen under the microscope."…

"Blood plasma passing out of capillary to feed the body cells." &mdash;Davison, 1910

Capillaries

"Blood plasma passing out of capillary to feed the body cells." —Davison, 1910

A diagram illustrating the circulation of the blood. Labels: A, vena cava descending (superior); Z, vena cava ascending (inferior); C, right auricle; D, right ventricle; E, pulmonary artery; F, P, lungs and pulmonary veins; G, left auricle; H, left ventricle; I, K, aorta.

Circulation of Blood

A diagram illustrating the circulation of the blood. Labels: A, vena cava descending (superior); Z,…

"<em>R.A.</em>, right auricle; <em>L.A.</em>, left auricle; <em>R.V.</em>, right ventricle; <em>L.V.</em>, left ventricle; <em>P.A.</i., pulmonary artery; <em>A</em>, pulmonary artery and vein of right lung; <em>B</em>, pulmonary artery and vein of left lung; <em>C</em>, carotid artery to head, showing branch of left subclavian artery; <em>D</em>, portal vein; <em>F</em>, hepatic artery; <em>G</em>, superior vena cava, bringing blood from head and upper limbs to right auricle." &mdash; Blaisedell, 1904

Diagram of the circulation of the blood

"R.A., right auricle; L.A., left auricle; R.V., right ventricle; L.V.,…

A magnified view of corpuscles of human blood compared to animal blood. Labels: A, corpuscles of human blood; B, corpuscles in the blood of an animal (a non-mammal).

Corpuscles of Human and Animal Blood

A magnified view of corpuscles of human blood compared to animal blood. Labels: A, corpuscles of human…

The circulation of the blood in the web of a frog's foot. A, an artery; B, capillaries crowded with disks, owing to a rupture just above, where the disks are jammed into an adjacent mesh; C, a deeper vein; the black spots are pigments cells.

Circulation of Blood in a Frog's Foot

The circulation of the blood in the web of a frog's foot. A, an artery; B, capillaries crowded with…

This illustration shows various types of gladiators, each type with with his specific weapons attributed to him.
Gladiators were swordsmen whose profession was to fight for the public amusement. Gladiators are said to have been borrowed by Rome from the Etruscans. They were first exhibited in Rome in 246 BC, primarily at funerals, but afterwards at festivals, particularly those celebrated by the aediles and other magistrates. More than ten thousand were shown at Trajan's triumph over the Dacians. They were either free-born citizens, usually of a low class, who fought for hire, or captives, slaves, or malefactors, and were kept in schools, where they were carefully trained. Chief varieties were Andabatae, who wore helmets with no openings for the eyes, so that their blindfold movements provoked the spectators' mirth; Mirmillones, who used Gallic weapons, sword and shield; Retiarii, who carried a net and a three-pronged lance -- the net to entangle their opponents; and Thraces, who, like the Thracians, used a short sword and a round buckler. 
When a gladiator was severely wounded and defeated, the people cried out 'Habet' (He has it), and he lowered his arms; then, if the spectators wished his life to be spared, they turned their thumbs down; but it they desired his death, they turned them up. These combats were often attended by great cruelty and callousness on the part of the spectators; sometimes they were fights à outrance, none being spared alive. Discharged gladiators were presented with a rudis, or wooden sword, and hence were called rudiarii. Gladiatorial combats were disliked by the Greeks, and practically never took place in Greek cities.

Gladiators

This illustration shows various types of gladiators, each type with with his specific weapons attributed…

"Diagram to show the working parts of a gland. v and a are blood tubes with thin-walled branches around the parts of the gland c. These take material from the blood and, after changing it, send it to the mouth, stomach, or other places before the duct i." &mdash;Davison, 1910

Gland

"Diagram to show the working parts of a gland. v and a are blood tubes with thin-walled branches around…

"The heart and blood-vessels diagrammatically represented. L, lung; M, intestine; P, liver; dotted lines represent lymphatic vessels." &mdash;Martin, 1917

Heart

"The heart and blood-vessels diagrammatically represented. L, lung; M, intestine; P, liver; dotted lines…

"The heart and the great blood-vessel attached to it, seen from the side towards the sternum. The left cavities and the vessels connected with them are colored red; the right black. Atd, right auricle; Adx and As, the right and left auricular appendages; Vd, right ventricle; Vs, left ventricle; Aa, aorta; Ab, innominate artery; Cs, left common carotid artery; Ssi, left subclavian artery; P, main trunk of the pulmonary artery, and Pd and Ps, its branches to the right and left lungs; cs, superior vena cava; Ade and Asi, the right and left innominate veins; pd, ps, the right and left pulmonary veins; crd and crs, the right and left coronary arteries." &mdash;Martin, 1917

Heart

"The heart and the great blood-vessel attached to it, seen from the side towards the sternum. The left…

"The heart vied from its dorsal aspect. ci, inverior vena cava; Vc, coronary vein; Atd, right auricle; Adx and As, the right and left auricular appendages; Vd, right ventricle; Vs, left ventricle; Aa, aorta; Ab, innominate artery; Cs, left common carotid artery; Ssi, left subclavian artery; P, main trunk of the pulmonary artery, and Pd and Ps, its branches to the right and left lungs; cs, superior vena cava; Ade and Asi, the right and left innominate veins; pd, ps, the right and left pulmonary veins; crd and crs, the right and left coronary arteries." &mdash;Martin, 1917

Heart

"The heart vied from its dorsal aspect. ci, inverior vena cava; Vc, coronary vein; Atd, right auricle;…

The heart and blood vessels diagrammatically represented, showing the direction of blood flow.

Heart and Blood Vessels

The heart and blood vessels diagrammatically represented, showing the direction of blood flow.

Diagram showing the compartments of the heart. The smaller compartments are the auricles (also known as atria) and the larger compartments are the ventricles. The middle part of the figure represents the heart with its two sides; <em>a</em> being the right auricle, <em>b</em> the right ventricle, <em>d</em> the left auricle, and <em>e</em> the left ventricle. The blood is received in the right auricle, <em>a</em>, from the general system, <em>f</em>. It then passes into the right ventricle, <em>b</em>, and is forced by the contraction of it through arteries to the lungs, <em>c</em>. From the lungs it comes back to the heart, to the left side, and enters the left auricle, <em>d</em>. From this it passes into the left ventricle, <em>e</em>, from which it is sent all over the body, represented by <em>f</em>.

Heart, Compartments of

Diagram showing the compartments of the heart. The smaller compartments are the auricles (also known…

"Diagram of the blood vessels in the kidney." &mdash;Davison, 1910

Kidney

"Diagram of the blood vessels in the kidney." —Davison, 1910

An instrument used to record cariation in the pressure of the blood

Kymograph

An instrument used to record cariation in the pressure of the blood

"Diagram to show the way in which an outgrowing gill-process bearing blood-holding lamellae, may give rise, if the sternal body wall sings inwards, to a lung-chamber with air-holding lamellae. I is the embryonic condition. L is the condition of outgrowth with gl, gill lamellae. A is the condition of insinging of the sternal surface and consequent enclosure of the lamelligerous surface of the appendage in a chamber with narrow orifice&mdash;the pulmonary air-holding chamber. pl, Pulmonary lamellae. bs, Blood sinus." &mdash; The Encyclopedia Britannica, 1910

Lamellae

"Diagram to show the way in which an outgrowing gill-process bearing blood-holding lamellae, may give…

"Mercury manometer for recording blood-pressure. d g, glass U-tube partly filled with mercury. In one limb is borne a float, e, bearing a recording device f; the other limb is filled with a suitable liquid and connected water-tight with the heart end of a divided artery b, by means of glass connection a. Changes in the mercury level indicated changes of arterial pressure." &mdash;Martin, 1917

Manometer

"Mercury manometer for recording blood-pressure. d g, glass U-tube partly filled with mercury. In one…

"Principal Muscles on the Right, Certain Organs of the Chest and Abdomen, and the Larger Blood Vessels on the Left." — Blaisedell, 1904

Muscles and Blood Vessels

"Principal Muscles on the Right, Certain Organs of the Chest and Abdomen, and the Larger Blood Vessels…

"Showing the carotid artery and jugular vein on the right side, with some of their main branches; also some large nerve trunks." &mdash; Blaisedell, 1904

Blood vessels of the neck

"Showing the carotid artery and jugular vein on the right side, with some of their main branches; also…

The bloody pavao (<em>coracina scutata</em>) is a mostly black bird, which gets its name from the blood red feathers on its neck and breast resembling a wound.

Bloody Pavao

The bloody pavao (coracina scutata) is a mostly black bird, which gets its name from the blood…

A long-handled implement with a row of projecting teeth at its head, used especially to gather leaves or to loosen or smooth earth.

Tool Combination Rake

A long-handled implement with a row of projecting teeth at its head, used especially to gather leaves…

A heraldic field sprinkled with drops of blood.

Guttée du Sang

A heraldic field sprinkled with drops of blood.

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment of lateral eyes. obl, Camerostome (upper lip). so, Sense-organ of Patten. PrGabp1, Rudiment of the appendage of the praegenital somite which disappears. abp2, Rudiment of the right half of the genital operculum. abp3, Rudiment of the right half of the genital operculum. abp4 to abp7, Rudiments of the four appendages which carry the pulmonary lamellae. I to VI, Rudiments of the six limbs of the prosoma. VIIPrG, The evanescent praegenital somite. VIII, The first mesosomatic somite or genital somite. IX, The second mesosomatic somite or pectiniferous somite. X to XIII, The four pulmoniferous somites. XIV, The first metasomatic somite." &mdash; The Encyclopedia Britannica, 1910

Scorpio Embryo

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment…

"<em>A</em>, outer layer of cuticle; <em>B</em>, deeper layer of cuticle; <em>C</em>, duct of sweat gland; <em>D</em>, true skin; <em>E</em>, sublayer of true skin, with columnar cells. The blood vessels are injected to show black." &mdash; Blaisedell, 1904

Cross-section of the skin

"A, outer layer of cuticle; B, deeper layer of cuticle; C, duct of sweat…

"IMBUED. Weapons spotted with blood are said to be imbued. The example shows a spearhead imbued." -Hall, 1862

Spearhead Imbued

"IMBUED. Weapons spotted with blood are said to be imbued. The example shows a spearhead imbued." -Hall,…

A white blood corpuscle sketched at successive intervals of a few seconds to illustrate the change of form due to tis amoeboid movements.

White Blood Corpuscle

A white blood corpuscle sketched at successive intervals of a few seconds to illustrate the change of…