John Gutenberg
Tthorwalden's statue of John Gutenberg
vena cumulata
venae dilatatae
Vena profunda
Divining rod
There are many great contentions between miners concerning the forked twig, for some say that it is of the greatest use in discovering veins, and others deny it. Some of those who manipulate and use the twig, first cut a fork from a hazel bush with a knife, for this bush they consider more efficacious than any other for revealing the veins, especially if the hazel bush grows above a vein. Others use a different kind of twig for each metal, when they are seeking to discover the veins, for they employ hazel twigs for veins of silver; ash twigs for copper; pitch pine for lead and especially tin, and rods made of iron and steel for gold. All alike grasp the forks of the twig with their hands, clenching their fists, it being necessary that the clenched fingers should be held toward the sky in order that the twig should be raised at that end where the two branches meet. Then they wander hither and thither at random through mountainous regions. It is said that the moment they place their feet on a vein the twig immediately turns and twists, and so by its action discloses the vein; when they move their feet again and go away from that spot the twig becomes once more immobile.
Hildegard receiving the light from Heaven
Hildegard receiving the Light from Heaven (Wiesbaden Codex B, fo. 1 r)
10th Century soldier
Figure of Goliath, from a Latin Psalter of the tenth century in the British Museum Additional MS., No. 18,043. The hauberk is coloured blue in the original, apparently indicating chain-mail. The curious combed helmet is of the same hue, clearly implying a defence of iron.
Anglo-Saxon soldiers
Another group from Cotton MS., Claudius, B. iv.
Anglo-Saxon Spearmen
Anglo-Saxon spearmen, from the fine manuscript of Prudentius in the Tenison Library. Date, the beginning of the eleventh century. The drawings are in pen-and-ink only, but very carefully executed: the later subjects by a fresh hand, but all Anglo-Saxon work.
Anglo-Saxon warriors
Group from Cottonian MS., Claudius, B. iv., folio 24: Aelfric's Anglo-Saxon Paraphrase of the Pentateuch, &c. Date about 1000. The crowned figure in the centre appears to be armed in a coat of chain-mail
A Sprinkle or Hand-Flail of bronze
From the Museum of Mitau in Courland
Swords
Fig. 7. Norwegian Sword. The pommel and cross-piece are of iron. Figs. 8 to 11. From Livonian graves : the originals are in the British Museum. Fig. 10 is single-edged : its pommel and the chape of the scabbard are of bronze. Fig. 11 has its pommel and guard ornamented with silver
Swords
Fig. 1. Found in the Anglo-Saxon cemetery at Fairford. It measures upwards of 2 ft. 11 inches, and is one of the finest examples extant. Fig. 2. In the Hon. Mr. Neville's collection : found in the Anglo-Saxon cemetery at Wilbraham, Cambridgeshire. Length of blade, 2 ft. 7 in. It retains the bronze mountings of the sheath, which have been gilt. Fig. 3. Same collection and find • a specimen re-markable for the cross-piece at the hilt. Fig. 4 Ancient-. Irish Sword of the same period : length, 30 inches. From Mr. Wakeman's paper in vol. iii. of Colleetanea Antigua. Fig. 5. Danish sword with engraved runes : in the Copenhagen Museum. Fig. 6. Danish : from the Annaler for Nordisk Oldkyndighed. Remarkable for the form of its cross-piece
Father Lana's aerial ship (1670)
Certainly Lana's project is impracticable: the learned Jesuit did not foresee that his empty copper balloons would be crushed by the external atmospheric pressure; but he nevertheless had a very clear idea and very remarkable for his time of the principle of aerial navigation by balloons lighter than the volume of air which they move. He ends his long chapter with some very curious considerations: I do not see any other difficulties that can be opposed to this idea, except one which seems to me more important than all the others, and that God will not allow this invention to be ever successfully applied in practice, in order to prevent the consequences which would result from it for the civil and political government of men. Indeed, who does not see that there is no State which would be insured against a stroke of surprise, because this ship would be heading in a straight line on one of its strongholds, and, landing there, could descend there soldiers.
The Venice parachute (1617), after an engraving of the time
The attached engraving is the exact reproduction of the parachute that the author also defines in the following terms, certainly inspired by those of Leonardo da Vinci: With a square veil stretched out with four equal poles and having tied four ropes to the four quinces, a man without danger will be able to throw himself from the top of a tower or some other prominent place; because although, at the hour, there is no wind, the effort of he who falls will bring wind which will hold back the sail, lest it fall violently, but gradually descend. The man therefore must measure himself with the size of the sail.
Principle of the parachute, drawing by Leonardo da Vinci
If Leonardo da Vinci's aerial flight experiments do not seem to have been carried out on a large scale, it is perhaps not the same with the parachute, the use of which is much safer. The description of Leonardo da Vinci was reproduced later, not without a notable improvement in the mode of representation of the apparatus, in a collection of machines, due to Fauste Veranzio and published in Venice in 1617.
Principle of the helicopter, drawing by Leonardo da Vinci
Principle of the helicopter, drawing by Leonardo da Vinci
Facsimile of Leonardo da Vinci's drawings on artificial wings
The examination of the original drawings of the great Italian artist is intersting. We reproduce by heliogravure a complete plate; it makes it possible to follow the thought which presided over its execution. We let Dr. Hureau de Villeneuve interpret it. We see in the second row on the right a small character quite similar to a demon or a genie, for he wears a flame on his head and, next to this flame, a Latin cross. His arms end with the fingers of a bat. The figure is not yet finished when Leonardo already recognizes its insufficiency and, guessing the little muscular action of the arms, thinks of using the force of the legs. So we see a little higher, in the same plank, a vigorous man placed on his stomach, his legs bent and about to launch a violent kick. The protruding muscles, traced by an anatomist's pencil, reveal the great painter in an unassuming drawing.
Comparative size of molecules
An atom is the smallest particle of a chemical element. Two or more atoms come together to form a molecule: thus molecules form the mass of matter. A molecule of water is made up of two atoms of hydrogen and one atom of oxygen. Molecules of different substances, therefore, are of different sizes according to the number and kind of the particular atoms of which they are composed. A starch molecule contains no less than 25,000 atoms. Molecules, of course, are invisible. The above diagram illustrates the comparative sizes of molecules.
The Spectroscope, an Instrument for Analysing Light
This pictorial diagram illustrates the principal of Spectrum Analysis, showing how sunlight is decomposed into its primary colours. What we call white light is composed of seven different colours. The diagram is relieved of all detail which would unduly obscure the simple process by which a ray of light is broken up by a prism into different wave-lengths. The spectrum rays have been greatly magnified.
Gutenberg
Frame
Frame
Bulmer
Baskerville
B
B
View of Stereotype Foundry
Thomas Curson Hansard
The Printing Press of the Stanhope Construction
The Printing Press of the original construction
The Lithographic Star Press
The Frame
Mr Bensley's Machine
Koster
Inscription of the Sigean Tablet
Bloodletting
Bloodletting
Wet Cupping for a headache
Wet cupping for a headache. (From Frederik Dekkers, Exercitationes Practicae Circa Medendi Methodum, Leyden, 1694.)
W. D. Hooper’s patent cupping apparatus with tubular blades
W. D. Hooper’s patent cupping apparatus with tubular blades. (From patent specifications, U.S. patent no. 68985.)
Scarification without cupping in Egypt
Scarification without cupping in Egypt in the 16th century. To obtain sufficient blood, 20 to 40 gashes were made in the legs and the patient was made to stand in a basin of warm water. (From Prosper Alpinus, Medicina Aegyptorum, Leyden, 1719.
R. J. Dodd’s patent cupping apparatus
R. J. Dodd’s patent cupping apparatus. Figs. 4 and 5 are the tubes for cupping the uterus. Fig. 3 is the flexible match scarifier. (From patent specifications, U.S. patent no. 3537.)
Patent for a complex cupping pump
Patent for a complex cupping pump, J. A. Maxam, 1916. (From patent specifications, U.S. patent 1179129.)
Paré’s scarificator
Paré’s scarificator, 16th century. (From The Workes of that Famous Chirurgeon, Ambrose Parey, translated by Thomas Johnson, London, 1649.)
Junod’s boot applied to a baby in the cradle
Junod’s boot applied to a baby in the cradle. (From Victor Theodore Junod, A Theoretical and Practical Treatise on Maemespasia. London, 1879.
Instruments for bleeding from the arm, 1708
Instruments for bleeding from the arm, 1708: a, a serviette to cover the patient’s clothing; b, a cloth ligature to place around the arm; c, a lancet case; d, a lancet; e and f, candles to give light for the operation; g, a baton or staff for the patient to hold; h, i, and k, basins for collecting blood; l and m, compresses; n, a bandage to be placed over the compress; p, eau de la Reine d’Hongrie that can be used instead of vinegar to revive the patient if he faints; q, a glass of urine and water for the patient to drink when he revives; r, s, t, implements for washing the hands and the lancets after the operation. (From Pierre Dionis, Cours d’opérations de chirurgie demontrées au Jardin Royal, Paris, 1708.
Instruments and technique of phlebotomy
Instruments and technique of phlebotomy: Fig. 1 shows an arm about to be bled. A ligature has been applied to make the veins swell. The common veins bled—cephalic, basilic, and median—are illustrated. Fig. 2 shows several types of incisions. Fig. 3 is a fleam, Fig. 4 a spring lancet, and Fig. 5 a “French lancet.” (From Laurence Heister, A General System of Surgery, London, 1759.
Dry cupping for sciatica
Dry cupping for sciatica. (From Frederik Dekkers, Exercitationes Practicae Circa Medendi Methodum, Leyden, 1694.
Depurator patented by A. F. Jones, 1866
Depurator patented by A. F. Jones, 1866. (From patent specifications)
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.)
Cupping Instruments
Cupping instruments illustrated by Dionis, 1708: a, cups made of horn; b, lamp for exhausting air; c, fleam for making scarifications; d, horns with holes at the tip for mouth suction; e, balls of wax to close the holes in the horn cups; f, g, glass cups; h, candle to light the tow or the small candles; i, tow; k, small candles on a card which is placed over the scarifications and lit in order to exhaust the cup; l, lancet for making scarifications; m, scarifications; n, plaster to place on the wound. (From Pierre Dionis, Cours d’opérations de chirurgie demontrées au Jardin Royal, Paris, 1708.)
An early illustration of the octagonal scarificator
An early illustration of the octagonal scarificator, 1801. This plate also includes one of the earliest illustrations of the syringe applied to cupping cups. (From Benjamin Bell, A System of Surgery, 7th edition, volume 3, Edinburgh, 1801.)
Advertisement for phlebotomy and cupping instruments
Advertisement for phlebotomy and cupping instruments. Note the rubber cups. (From George Tiemann & Co., American Armamentarium Chirurgicum, New York, 1889.)
A man employing leeches to reduce his weight
A man employing leeches to reduce his weight, 16th century. (From P. Boaistuau, Histoire Podigieuses, Paris, 1567. )
Woman using leeches
Woman using leeches, 17th century. (From Guillaume van den Bossche, Historica Medica, Brussels, 1639.)
Jerusalem
View and Plan of Jerusalem. Fac-simile of a Woodcut in the "Liber Chronicarum Mundi" large folio, Nuremberg, 1493.
The Bastille
The subterranean cells of the Bastille did not differ much from those of the Châtelet. There were several, the bottoms of which were formed like a sugar-loaf upside down, thus neither allowing the prisoner to stand up, nor even to adopt a tolerable position sitting or lying down. It was in these that King Louis XI., who seemed to have a partiality for filthy dungeons, placed the two young sons of the Duke de Nemours (beheaded in 1477), ordering, besides, that they should be taken out twice a week and beaten with birch rods, and, as a supreme measure of atrocity, he had one of their teeth extracted every three months. It was Louis XI., too, who, in 1476, ordered the famous iron cage, to be erected in one of the towers of the Bastille, in which Guillaume, Bishop of Verdun, was incarcerated for fourteen years.
Paris 1607
Perspective View of Paris in 1607.--Fac-simile of a Copper-plate by Léonard Gaultier. (Collection of M. Guénebault, Paris.)
Tower of the temple
The creation of a public revenue, raised by the contributions of all classes of society, with a definite sum to be kept in reserve, thus dates from the reign of Philip Augustus. The annual income of the State at that time amounted to 36,000 marks, or 72,000 pounds' weight of silver--about sixteen or seventeen million francs of present currency. The treasury, which was kept in the great tower of the temple, was under the custody of seven bourgeois of Paris, and a king's clerk kept a register of receipts and disbursements. This treasury must have been well filled at the death of Philip Augustus, for that monarch's legacies were very considerable. The Tower of the Temple, in Paris.--From an Engraving of the Topography of Paris, in the Cabinet des Estampes, of the National Library.
St Marks Place
View of St. Mark's Place, Venice, Sixteenth Century, after Cesare Vecellio.
Ramparts
Ramparts of the Town of Aigues-Mortes, one of the Municipalities of Languedoc.
Paris
Paris
Lubeck
View of Lubeck and its Harbour (Sixteenth Century).--From a Copper-plate in the Work of P. Bertius, "Commentaria Rerum Germanicarum," in 4to: Amsterdam, 1616.