- Illustrating Galen’s physiological teaching
The basic principle of life, in the Galenic physiology, is a spirit, anima or pneuma, drawn from the general world-soul in the act of respiration. It enters the body through the rough artery (τραχεῖα ἀρτηρία, arteria aspera of mediaeval notation), the organ known to our nomenclature as the trachea. From this trachea the pneuma passes to the lung and then, through the vein-like artery (ἀρτηρία φλεβώδης, arteria venalis of mediaeval writers, the pulmonary vein of our nomenclature), to the left ventricle. Here it will be best to leave it for a moment and trace the vascular system along a different route. - A Chinese sedan chair and bearers
A Chinese sedan chair and bearers - Reducing Dislocated Jaw
Reducing Dislocated Jaw - A Greek Clinic of 400 BC
A Greek Clinic of 400 BC In the centre sits a physician holding a lancet and bleeding a patient from the median vein at the bend of the right elbow into a large open basin. Above and behind the physician are suspended three cupping vessels. To the right sits another patient awaiting his turn; his left arm is bandaged in the region of the biceps. The figure beyond him smells a flower, perhaps as a preservative against infection. Behind the physician stands a man leaning on a staff; he is wounded in the left leg, which is bandaged. By his side stands a dwarfish figure with disproportionately large head, whose body exhibits deformities typical of the developmental disease now known as Achondroplasia; in addition to these deformities we note that his body is hairy and the bridge of his nose sunken; on his back he carries a hare which is almost as tall as himself. Talking to the dwarf is a man leaning on a long staff, who has the remains of a bandage round his chest. - Reducing Dislocated Shoulder
Reducing Dislocated Shoulder - Achilles bandaging Patroclus,
A kylix from the Berlin Museum of about 490 b. c. It bears the inscription ΣΟΣΙΑΣ ΕΠΟΙΗΣΕΝ, Sosias made (me), and represents Achilles bandaging Patroclus, the names of the two heroes being written round the margin. The painter is Euphronios, and the work is regarded as the masterpiece of that great artist. The left upper arm of Patroclus is injured, and Achilles is bandaging it with a two-rolled bandage, which he is trying to bring down to extend over the elbow. The treatment of the hands, a department in which Euphronios excelled, is particularly fine. Achilles was not a trained surgeon, and it will be observed, from the position of the two tails of the bandage, that he will have some difficulty when it comes to its final fastening! - Hildegard receiving the light from Heaven
Hildegard receiving the Light from Heaven (Wiesbaden Codex B, fo. 1 r) - A Steam Street Railway Motor
While in Paris, President Yerkes, of the North Chicago Street Railway Company, purchased a noiseless steam motor, the results in experimenting with which will be watched with great interest. The accompanying engraving, for which we are indebted to the Street Railway Review, gives a very accurate idea of the general external appearance. The car is all steel throughout, except windows, doors, and ceiling. It is 12 ft. long, 8 ft. wide, and 9 ft. high, and weighs about seven tons. The engines, which have 25 horsepower and are of the double cylinder pattern, are below the floor and connected directly to the wheels. The wheels are four in number and 31 in. in diameter. The internal appearance and general arrangement of machinery, etc., is about that of the ordinary steam dummy. It will run in either direction, and the exhaust steam is run through a series of mufflers which suppress the sound, condense the steam and return the water to the boiler, which occupies the center of the car. The motor was built in Ghent, Belgium, and cost about $5,000, custom house duties amounting to about $2,000 more. - Celestial influences on men animals and plants
Celestial influences on men animals and plants From THE LUCCA MS fo. 37 r - The universe
The Universe (from the Heidelberg Codex of the Scivias) The scientific views of Hildegard are embedded in a theological setting, and are mainly encountered in the Scivias and the Liber divinorum operum simplicis hominis. To a less extent they appear occasionally in her Epistolae and in the Liber vitae meritorum. - Hildegard’s first scheme of the universe
Hildegard’s First Scheme of the Universe (slightly simplified from the Wiesbaden Codex B, fo. 14 r) - Dante’s scheme of the universe
Dante’s scheme of the universe Slightly modified from Michelangelo Caetani, duca di Sermoneta, La materia della Divina Commedia di Dante Allighieri dichiarata in VI tavole, Monte Cassino, 1855. - Improved high speed engine and dynamo
We illustrate a high speed engine and dynamo constructed by Easton & Anderson, London. This plant was used at the Royal Agricultural Society's show at Doncaster in testing the machinery in the dairy, and constituted a distinct innovation, as well as an improvement, on the appliances previously employed for the purpose. The separator, or whatever might be the machine under trial, was driven by an electric motor fed by a current from the dynamo we illustrate. A record was made of the volts and amperes used, and from this the power expended was deduced, the motor having been previously carefully calibrated by means of a brake. So delicate was the test that the observers could detect the presence of a warm bearing in the separator from the change in the readings of the ammeter. - The Hildegard Country
The Hildegard Country - Hildegard’s second scheme of the universe
Reconstructed from her measurements. ab, cd, and ef are all equal to each other, as are also gh, hk, and kl. The clouds are situated in the outer part of the aer tenuis, and form a prolongation downwards from the aer aquosus towards the earth. - Improved high speed engine and dynamo - fig 2
The engine is carefully balanced to enable it to run at the very high speed of 500 revolutions per minute. The cranks are opposite each other, and the moving parts connected with the two pistons are of the same weight. The result is complete absence of vibration, and exceedingly quiet running. Very liberal lubricating arrangements are fitted to provide for long runs, while uniformity of speed is provided for by a Pickering governor. The high pressure cylinder is 4 in. in diameter, and the low pressure cylinder is 7 in. in diameter. The stroke in each case is 4 in.