hide Matching Documents

The documents where this entity occurs most often are shown below. Click on a document to open it.

Document Max. Freq Min. Freq
Plato, Republic 7 7 Browse Search
A Dictionary of Greek and Roman biography and mythology (ed. William Smith) 2 2 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 2 2 Browse Search
Strabo, Geography (ed. H.C. Hamilton, Esq., W. Falconer, M.A.) 1 1 Browse Search
Col. O. M. Roberts, Confederate Military History, a library of Confederate States Military History: Volume 12.1, Alabama (ed. Clement Anselm Evans) 1 1 Browse Search
Southern Historical Society Papers, Volume 30. (ed. Reverend J. William Jones) 1 1 Browse Search
View all matching documents...

Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 1261 AD or search for 1261 AD in all documents.

Your search returned 2 results in 2 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), G. (search)
telling just so much as everybody knew already. In 1098, the fleet of Alexis Comnenus used Greekfire against the Pisans. His ships had siphos fore and aft, in form of syringes, which squirted the inflamed matters. It is believed that the ancient Byzantium was marked by the present walls of the Seraglio. Con- stantine enlarged it A. D. 328, gave it its name, and made it the rival of Rome. It was taken from the Greeks, in 1204, by the Venetians under Dandolo; retaken by the Greeks, in 1261, under the Emperor Michael Palaeologus; captured by the Turks in 1453. An old recipe for Greek-fire is thus given: — Aspaltum, nepta, dragantum, pix quoque Graeca, Sulphur, vernicis, de perolio quoque vitro. Mercurii, sal gemmae Graeci dicitur ignis. Another reads as follows: Take of pulverized resin, sulphur, and pitch equal parts; one fourth of oppopanax and of pigeons' dung well dried, dissolved in turpentine water or oil of sulphur; these put into a strong, close, glass vessel a
Knight's Mechanical Encyclopedia (ed. Knight), M. (search)
om the plate and affixed to a duplicate handle is ready for the illustration. Nearly fifteen pounds of force to the square inch will be required to draw them asunder. To separate them readily, it is only necessary to open the stop-cock and re-admit air. Mag′ic Lan′tern. A dioptric instrument by which the images of small figures painted in transparent varnish are exhibited, considerably magnified, upon a wall or screen. Its invention has been attributed to Roger Bacon about the year 1261, but it was first generally made known by Baptista Porta in his Natural Magick, and by Kircher, 1669-70, who described it in his Ars magna Lucis et Umbrae. Magic lanterns. Comes Mr. Reeves bringing me a lanthorn with pictures in glass to make strange things appear on a wall, very pretty. — Pepys's Diary, 1666. As at present constructed, the instrument A consists of a case having a projecting tube in front, in which are two lenses, the inner for illumination and the outer for magnify<