- Deer boar
Deer boar - Deer crossing a stream, engraved on a round bone
- Deer crossing a stream, engraved on a round bone
- Deer Divider
Deer Divider - Deerhound
Deerhound - Defence of Hadley
- Defending the Bridge
Defending the Bridge - Delicate floral frame
Delicate floral frame - Demeter
- Demeter rejoiced for her daughter was by her side
So for six glad months each year Demeter rejoiced, for her daughter was by her side, and ever it was spring and summer while Persephone dwelt on earth. But when the time came for her to return to Hades, Demeter grew ever cold and sad, and the earth too became weary and grey. It was autumn and winter in the world until Persephone returned once more. - Demodex folliculorum
- Demons
- Demonstration of Sailors in Favour of the Navigation Laws
- Demours’ device for combining cup, scarifier and exhausting apparatus
Demours’ device for combining cup, scarifier and exhausting apparatus. (From Samuel Bayfield, A Treatise on Practical Cupping, London, 1823.) - Dendrites—a typical pseudofossil
- Departure in the morning on the inland ice
- Depurator patented by A. F. Jones, 1866
Depurator patented by A. F. Jones, 1866. (From patent specifications) - Dermanyssus gallinæ, female
- Dermatophilus penetrans
The chigoes, or true chiggers, are the most completely parasitic of any of the fleas. Of the dozen or more known species, one commonly attacks man. This is Dermatophilus penetrans, more commonly known as Sarcopsylla penetrans or Pulex penetrans. This species occurs in Mexico, the West Indies, Central and South America. The males and the immature females of Dermatophilus penetrans closely resemble those of other fleas. They are very active little brown insects about 1-1.2 mm. in size, which live in the dust of native huts and stables, and in dry, sandy soil. In such places they often occur in enormous numbers and become a veritable plague. - Dervish
- Descartes
- Desert dweller
- Desert dweller 2
- Desert dweller 3
- Desert jumping mouse
Although these animals are numerous in the regions they inhabited, they are rarely seen here. They cannot be called shy, but they are restless and fearful and go to their burrows at the slightest, and as soon as they see a foreign object, as possible, to their burrows. - Design of a Caligraphic Ornament taken from a Charter of the University of Paris
- Design on Engraved Pot representing a Tiger seated in a Wreath of Water Lilies
- Design on the Stalls in the Church of St. Benoît-sur-Loire
- Desk in the library at Zutphen
One example at least of these fittings still exists, in the library attached to the church of S. Wallberg, at Zutphen in Holland. This library was built in its present position in 1555, but I suspect that some of the fittings, those namely which are more richly ornamented, were removed from an earlier library. Each of these desks is 9 feet long by 5 feet 6 inches high; and, as you will see directly, a man can sit and read at them very conveniently. - Despisinh his birthright
- Destroying a Straggler from the Armada
The first Spanish ships to meet their fate were the stragglers from the main body of the Armada. Above is shown one such vessel being engaged by an English captain. The great Spanish galleon is quite at the mercy of the smaller but handier vessel, which has got the wind of her enemy, and is pouring a destructive fire into her prow. - Destruction of Kittaning
- Destruction of the village of St. Francis
- Detail of Balista springs
- Detail showing the Construction of the Face of Coatlicue
- Details from the Stone of Tizoc
- Details of decoration
Details of decoration - Details of female fashion 1820 - 1828
- Detective T. V. Jackson
- Determined boy
- Device for developing the Abdominal Muscles
The latest invention purposely for these muscles is also one of Sargent's, on the following plan: The pupil lies on the plank A A', or, rather, sits on it, when A' is a little back of vertical, so as, for instance, to form with A the angle A B A'. With feet in the toe-straps C C', he sways gently forward and back as long as he can without fatigue. From day to day, as these muscles gain strength, A' is dropped lower and lower, until finally it is on a level with A. Or a strap may be placed over the forehead and fastened to A', and, with the feet in the toe-straps, the person may lift his body up till vertical, drawing the weight E with him as he rises. - Devil
The Devil - Devil
Depiction of the devil - Devil
Devil - Devil
Devil - Devil
Devil - Devil
Devil - Devil
Devil - Devils chasing a rabbit
Devils chasing a rabbit - Devon Yearling Heifer, shown at Croydon, 1875
- Diadem of Charlemagne
- Diagram comparing the Pioneer with the Columbia
Diagram comparing the Pioneer (shaded drawing) with the Columbia, a standard 8-wheel engine of 1851. (Drawing by J. H. White.) Columbia Hudson River Railroad Lowell Machine Shop, 1852 Wt. 271/2 tons (engine only) Cyl. 161/2 x 22 inches Wheel diam. 84 inches Pioneer Cumberland Valley Railroad Seth Wilmarth, 1851 121/2 tons 81/2 x 14 inches 54 inches - Diagram of a Lobule of the Liver
Diagram of a Lobule of the Liver divided vertically through its Axis. In its centre is a space, the intralobular vein, through which the blood falls into a branch of the hepatic vein, on its way to the heart. An interlobular branch of the portal vein, which brings the blood from the digestive organs, pours it by many smaller vessels over the surface of the lobule. It filters into the lobule through innumerable pseudo-capillary vessels, or spaces, between the radiating columns of liver-cells. Arterial blood is brought to the lobule by a twig of the hepatic artery. Bile is drained away from it by an affluent of the hepatic duct. In the lower part of the diagram seven liver-cells are shown, forming a divided column, magnified about 300 diameters. The cells are loaded with glycogen, and contain minute globules of fat. Red blood-corpuscles and two leucocytes are seen between the columns of liver-cells. One of the leucocytes has ingested two blood-corpuscles. - Diagram of a longitudinal section of a mosquito
It is well known that mosquitoes, when they bite, inject into the wound a minute quantity of poison. The effect of this varies according to the species of mosquito and also depends very much on the susceptibility of the individual. Soon after the bite a sensation of itching is noticed and often a wheal, or eminence, is produced on the skin, which may increase to a considerable swelling. The scratching which is induced may cause a secondary infection and thus lead to serious results. Some people seem to acquire an immunity against the poison. The purpose of this irritating fluid may be, as Reaumur suggested, to prevent the coagulation of the blood and thus not only to cause it to flow freely when the insect bites but to prevent its rapid coagulation in the stomach. Obviously, it is not developed as a protective fluid, and its presence subjects the group to the additional handicap of the vengeance of man. As to the origin of the poison, there has been little question, until recent years, that it was a secretion from the salivary glands. Macloskie (1888) showed that each gland is subdivided into three lobes, the middle of which differs from the others in having evenly granulated contents and staining more deeply than the others. - Diagram of a modern spherical balloon with ripping panel
The ripping panel, invented in 1844 by America’s foremost pioneer aëronaut, John Wise, is a simple and an excellent practical device. This is a long patch running longitudinally above the equator[8] of the balloon, feebly sewed to the envelope, and having a cord, called the “ripping cord,” extending down to the car along the outside or inside of the bag, so that the pilot on coming to earth can let out the gas quickly by tearing a rent in the balloon, thus flattening it promptly on the earth’s surface, so as to avoid dragging and bumping if any wind prevails. - Diagram of amœba
The amœba is one of the simplest of all animals, and gives us a hint of the original ancestors. It looks like a tiny irregular speck of greyish jelly, about 1/100th of an inch in diameter. It is commonly found gliding on the mud or weeds in ponds, where it engulfs its microscopic food by means of out-flowing lobes (PS). The food vacuole (FV) contains ingested food. From the contractile vacuole (CV) the waste matter is discharged. N is the nucleus, GR, granules. - Diagram of artery, capillaries, and veins
- Diagram of Curtiss Aeroplane, side view
1. Motor; 2. Radiator; 3. Fuel Tank; 4. Upper Main Plane; 5. Lower Main Plane; 6. Aileron; 7. Vertical Rudder; 8. Tail Surface; 9. Horizontal Rudder, or Rear Elevator; 10. Front Elevator; 11. Vertical Fin; 12. Steering Wheel; 13. Propeller; 14. Foot Throttle Lever; 15. Hand Throttle Lever; 16. Foot Brake. - Diagram of Curtiss hydro-aëroplane
- Diagram of Curtiss motor, side and front views
1. Cylinder; 2. Engine Bed; 3. Fuel Tank: 4. Oil Pan; 5. Radiator; 6. Propeller; 7. Crank Case; 8. Carbureter; 9. Gasoline Pipe; 10. Air Intake; 11. Auxiliary Air-pipe; 12. Drain Cock; 13. Water Cooling System; 14. Gas Intake Pipe; 15. Rocker Arm; 16. Spring on Intake Valve; 17. Spring on Exhaust Valve; 18. Exhaust Port; 19. Rocker Arm Post; 20. Push Rod.