Its clarity and good optical properties are other important factors.

Then in 2 we show that any line involution with the properties that ( A ) It has no complex of invariant lines, and ( B ) Its singular lines form a complex consisting exclusively of the lines which meet a twisted curve, is necessarily of the type discussed in 1.

Its chemical and physical properties are so similar to that of natural amethyst that it can not be differentiated with absolute certainty without advanced gemnological testing ( which is often cost-prohibitive ).

Its purgative properties are important ( known as la purga or " the purge ").

Its properties come solely from the power of unlimited recursion.

Its breakdown products and metabolites, DDE and DDD, are also highly persistent and have similar chemical and physical properties.

Its first clause promised the freedom of the church and the security of its properties, and succeeding clauses similarly reassured the propertied class.

Its antibacterial properties have also been demonstrated scientifically, although they are markedly weaker than those from a number of other plants studied.

Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights, and illuminated sporting venues.

Its usefulness in these applications is derived from its unique electrical and thermal insulating properties and its mechanical properties, which allow it to be cut, punched, stamped, and machined to close tolerances.

Its relative rarity on Earth, like that of helium, is due to its relative lightness, high vapor pressure at very low temperatures, and chemical inertness, all properties which tend to keep it from being trapped in the condensing gas and dust clouds which resulted in the formation of smaller and warmer solid planets like Earth.

Its various media properties reach about 360 million people monthly.

Its properties were explored in detail by the British meteorologist G. M. B. Dobson, who developed a simple spectrophotometer ( the Dobsonmeter ) that could be used to measure stratospheric ozone from the ground.

Its anti-androgenic properties reduce the level of free testosterone in the blood, while leaving total testosterone and DHEA unaffected.

Its properties were unique due to the special smelting and reworking of the steel creating networks of iron carbides described as a globular cementite in a matrix of pearlite.

Its main purpose is to clarify the properties of matter in aggregate, in terms of physical laws governing atomic motion.

Its properties may include its redness, its size and its composition, while its relations may include " on the table ", " in the room " and " being bigger than other apples ".

Its aim is to describe and explain the common properties and the structural diversity of the world's languages.

Its physical properties shape the hydrosphere and are an essential part of the water cycle and climate.

Its thermodynamic properties determine evaporation and the thermal gradient in the atmosphere.

Its properties are quite different from those of the set of alums described above.

Its divine aspect combined with its habitat in the earth between the roots of plants made it an animal with chthonic properties connected to the afterlife and immortality.

Its mechanical properties depend significantly on variables such as the extent and type of branching, the crystal structure and the molecular weight.

Its more recent meaning as a category of elements with intermediate or hybrid properties did not become widespread until the period 1940 – 1960.

Its early morning patrons were coachmen, who fortified themselves for the day with that delicacy.

Its people, including Pierre Bottineau and other American Fur Company employees and the refugees from Fort Garry, were joined by the remaining Scots and Swiss from Fort Snelling when Major Joseph Plympton expelled them from the reservation in May 1840.

Its entire complement of non-commissioned officers on the platoon level had departed as cadre for another unit, and its vehicles were still those used in the drive across Luzon in World War 2.

Its costive deliberations were likened to those of the British courts of chancery mercilessly caricatured by Dickens in Bleak House.

* That ethnographic work was often ahistorical, writing about people as if they were " out of time " in an " ethnographic present " ( Johannes Fabian, Time and Its Other ).

Its use was taught in the Calmecac to the temalpouhqueh, who were students dedicated to take the accounts of skies, from childhood.

Its chemical composition makes it difficult to match the amber to its producers – it is most similar to the resins produced by flowering plants ; however, there are no flowering plant fossils until the Cretaceous, and they were not common until the Upper Cretaceous.

Its founders were often away as well ; in the middle of harvesting, they left for a lecture tour through Providence, Rhode Island, New York City, and New Haven, Connecticut.

Its residents were removed to settle on the Aventine Hill in Rome as new citizens, following the Roman traditions from wars with the Sabines and Albans.

Its name means " no feet " in Greek, and it represents a bird-of-paradise ( which were once believed to lack feet ).

Its invention is credited to the Celts, the Romans were thought to have adopted their design.

Its New York offices were on the 92nd and 98th – 105th floors of the South Tower of the World Trade Center at the time of the September 11, 2001 terrorist attack.

Its initial successes were neutralized by the reverses of Abensberg, Landshut and Eckmuhl but, after the evacuation of Vienna, the archduke won a strong victory at the Battle of Aspern-Essling but soon afterwards lost decisively at the Battle of Wagram.

Its dedicatee was Count Moritz von Fries, a patron to whom the fourth violin sonata, the string quintet of the same year, and the seventh symphony were also dedicated.

Its guano deposits were mined by the American Guano Company from 1859 to 1878.

Its Jewish residents were expelled by the military order of Hadrian.

Its first modern incidence in biological warfare were when Scandinavian " freedom fighters " supplied by the German General Staff used anthrax with unknown results against the Imperial Russian Army in Finland in 1916.

Its proximity to the University of Birmingham, the city centre and the ‘ trendy ’ area of Moseley were all contributing factors.

Its city walls were much imitated ( for example, see Caernarfon Castle ) and its urban infrastructure was moreover a marvel throughout the Middle Ages, keeping alive the art, skill and technical expertise of the Roman Empire.

Its strong industrial tradition dates to the 19th century, when Bohemia and Moravia were the economic heartland of the Austro-Hungarian Empire.

" Its practitioners had difficulty convincing engineers that they were engineers and chemists that they were not simply chemists.

Its depth, steep east and west sides with shallow north and south ends is typical of the Finger Lakes, as they were carved by glaciers during the last ice age.

Its notable victories were the Catholic Emancipation Act of 1829, the Reform Act of 1832, and the repeal of the Corn Laws in 1846.

Its functions were replaced by a fans forum which met for the first time in December 2008.