See J.D. Whitaker, LL.D., F.S.A., History of the District of Craven (ed. Morant, 1878); Dugdale’s Monasticon Anglicanum.
BOLZANO, BERNHARD (1781-1848), Austrian priest and philosopher, was born at Prague on the 5th of October 1781. He distinguished himself at an early age, and on his ordination to the priesthood (1805) was appointed professor of the philosophy of religion in Prague University. His lectures, in which he endeavoured to show that Catholic theology is in complete harmony with reason, were received with eager interest by the younger generation of thinkers. But his views met with much opposition; and it was only through the protection of the archbishop, Prince Salm-Salm, that he was enabled to retain his chair. In 1820 he was accused of being connected with some of the students’ revolutionary societies, and was compelled to resign. Several doctrines extracted from his works were condemned at Rome, and he was suspended from his priestly functions, spending the rest of his life in literary work. He died at Prague on the 18th of December 1848. The most important of his numerous works are the Wissenschaftslehre, oder Versuch einer neuen Darstellung der Logik, advocating a scientific method in the study of logic (4 vols., Sulzbach, 1837); the Lehrbuch der Religionswissenschaft (4 vols., Sulzbach, 1834), a philosophic representation of all the dogmas of Roman Catholic theology; and Athanasia, oder Gründe für die Unsterblichkeit der Seele (2nd ed., Mainz, 1838). In philosophy he followed Reinhard in ethics and the monadology of Leibnitz, though he was also influenced by Kant.
See Lebensbeschreibung des Dr Bolzano (an autobiography, 1836); Wisshaupt, Skizzen aus dem Leben Dr Bolzanos (1850); Palágy, Kant und Bolzano (Halle, 1902).
BOMA (properly Mboma), a port on the north bank of the river Congo about 60 m. from its mouth, the administrative capital of Belgian Congo. Pop. about 5000. It was one of the places at which the European traders on the west coast of Africa established stations in the 16th and 17th centuries. It became the entrepôt for the commerce of the lower Congo and a well-known mart for slaves. The trade was chiefly in the hands of Dutch merchants, but British, French and Portuguese firms also had factories there. No European power exercised sovereignty, though shadowy claims were from time to time put forward by Portugal (see [Africa], § 5). In 1884 the natives of Boma granted a protectorate of their country to the International Association of the Congo.
See H.M. Stanley, The Congo and the Founding of its Free State (London, 1885).
BOMB, a term formerly used for an explosive shell (see [Ammunition]) fired by artillery. The word is derived from the Gr. βόμβος, a hammering, buzzing noise, cf. “bombard” (q.v.). At the present day it is most frequently used of a shattering or incendiary grenade, or of an explosive vessel actuated by clockwork or trip mechanism, employed to destroy life or property. In naval warfare, before the introduction of the shell gun, explosive projectiles were carried principally by special vessels known as bomb-vessels, bombards or, colloquially, bombs.
In geology, the name “bomb” is given to certain masses of lava which have been hurled forth from a volcanic vent by explosive action. In shape they are spheroidal, ellipsoidal or discoidal; in structure they may be solid, hollow or more or less cavernous; whilst in size they vary from that of a walnut to masses weighing several tons. It is generally held that the form is partly due to rotation of the mass during its aerial flight, and in some cases the bomb becomes twisted by a gyratory movement. According, however, to Dr H.J. Johnston-Lavis, many of the so-called bombs of Vesuvius are not projectiles, but merely globular masses formed in a stream of lava; and in like manner Professor J.D. Dana showed that what were regarded as bombs in Hawaii are in many cases merely lava-balls that have not been hurled through the air. Certain masses of pumice ejected from Vulcano have been called by Johnston-Lavis “bread-crust bombs,” since they present a coating of obsidian which has been bent and cracked in a way suggestive of the crust of a roll. It is probable that here the acid magma was expelled in a very viscous condition, and the crust which formed on cooling was burst by the steam from the occluded water. Some of the bombs thrown out during recent eruptions of Etna consist of white granular quartz, encased in a black scoriaceous crust, the quartz representing an altered sandstone. The bombs of granular olivine, found in some of the tuffs in the Eifel, are represented in most geological collections (see [Volcano]).