Around 1830 though, the Hungarian János Bolyai and the Russian Nikolai Ivanovich Lobachevsky separately published treatises on a type of geometry that does not include the parallel postulate, called hyperbolic geometry.

Around 1830, the Hungarian mathematician János Bolyai and the Russian mathematician Nikolai Ivanovich Lobachevsky separately published treatises on hyperbolic geometry.

Around 1830 to 1832 Joseph Henry made a similar discovery, but did not publish his findings until later.

Around 1830 Faraday established that the reactions at each of the two electrode – electrolyte interfaces provide the " seat of emf " for the voltaic cell, that is, these reactions drive the current.

Around 1830 Abbé Michon became interested in handwriting analysis.

Around 1826, people slowly began settling on the island ; by 1830, approximately six families made up its entire population.

Around 1830, a town hall was built, and a notary public moved from nearby Oudega to Drachten.

Around 1830, dozens of windmills were erected throughout in the municipality.

Around 1670, the new French hautbois began replacing the shawm in military bands, concert music and opera ; by 1700, the shawm had all but disappeared from concert life, although as late as 1830 shawms could still be heard in German town bands performing their municipal functions ( Baines, 1991 ).

Around 1830 new civic and government buildings began to emerge in Lugano.

Around 1830, Planche was introduced by the famous writer Alfred de Vigny to François Buloz, director of the Revue des deux mondes, and contributed to this journal until 1840.

Around it is a walled graveyard, with a watchhouse built after a bodysnatching raid in 1830.

Around 1825 both Lyell and Sedgwick had supported William Buckland's Catastrophism which postulated diluvialism to reconcile findings with the Biblical account of Noah's ark, but by 1830 evidence had shown them that the " diluvium " had come from a series of local processes.

Around 1830, small boys began to be dressed in sashed or belted tunics over trousers, a fashion which replaced the earlier skeleton suit.

Around 1830 ( though not all sources agree on the date ), he built the Benning Bridge as a toll bridge, one of the earliest crossings over the Anacostia River.

Around 1830, the Hudson's Bay Company ( HBC ), today popularly known simply as « The Bay », started the fur trade business in Nunavik by establishing their first post on the east shore of the Koksoak River, about 5 km downstream from the present-day settlement.

Around 1830, George Boole, the mathematician, taught at Waddington Academy Boarding School in the village, run by Robert Hall.

Around 1830, the Fulbe conquered the Mbum village of Delbé, which they renamed Ngaoundéré, after a nearby hill.

Around 1830 the discussion started for a renewed fortification of the Drøbak Narrows and the first stage was ready in 1848, the next in 1853.

Around 1830, he raised funds to build a synagogue in Uman to accommodate the increasingly large Rosh Hashana pilgrimage, and composed a number of prayers to be recited at Nachman's grave by his followers.

Around 1836, Hamersley decided to emigrate to Western Australia, largely on the basis of optimistic letters received from his sister Frances, who had emigrated to Western Australia with her husband William Locke Brockman in 1830.

Around 1830, the auxiliary buildings of the Abbey, in particular those that bordered on the Freyung, were renovated and partially rebuilt by Joseph Kornhäusel.

Around 1830, the English scientist Michael Faraday found that diluted nitric acid would attack steel, but concentrated nitric acid would not.

Around 1831, when Anne was eleven, she and Emily broke away from Charlotte and Branwell to create and develop their own fantasy world, Gondal.

Lilith Sternin starts as a one-time character in the Season 4 episode, " Second Time Around " ( 1985 ), but then she becomes a recurring character since Season 5 ( 1986 – 87 ), although she is a permanent character for Seasons 10 and 11 ( 1991 – 93 ).

Around 1968, she was married to cinematographer Salah Kurayyem ; the marriage lasted for approximately one year.

Around 1844, she married a free black man named John Tubman.

Around AD 400, she became head of the Platonist school at Alexandria ,< ref >

Around 987, as a consequence of the deterioration in the political relations between Poland and Hungary, she was repudiated.

Around that time her half-sister Wynonna Judd gave her a historic farmhouse and some land in Williamson County, Tennessee, so she moved to Tennessee ; that house has been her primary residence in the US ever since.

Around the time of her meeting with Queen Elizabeth I of England, she owned herds of cattle and horses that numbered at least one thousand, which would have meant she was wealthy.

Around this time she met Roman Polanski.

Around the same time, Jeanne de Lamotte-Valois escaped from prison in France and fled to London, where she published more damaging lies concerning her supposed " affair " with the queen.

Around the court, she was carried in a sedan chair, or used a wheelchair.

Around her estates, she used a one-horse chaise, which she drove herself " furiously like Jehu and a mighty hunter like Nimrod ".

Around this time she began lessons with the famed acting coach Vera Gregh.

Around this time, she gave her last concert, in Hawaii, backed by the Honolulu Symphony Pops ; her last song was " God Bless America ".

Around 22 BC ( she was 16 or so ), Antonia married Lucius Domitius Ahenobarbus ( consul 16 BC ).

Around 1945-47 Coutts moved to New York City via Montreal in order to publish his bondage and fetish magazine Bizarre ; Holly chose to remain in Australia, where she died in 1983 at the age of 70.

Around the age of 11, she contracted her two first names to form the name " Marlene ".

Around the age of 13 she was raped.

Around 1902 she was first exposed to blues music, hearing a girl sing in a tent in Missouri, and incorporated it into her performances.

" Rockin ' Around the Christmas Tree " got noticed in its third release a few months later, and sales snowballed ; the song remains a perennial favorite each December and is the record with which she is most identified by contemporary audiences.

Around the time of her second divorce, she also became disenchanted with Roulette Records.

Around 1911, she moved to New York City, working in chorus lines and eventually becoming a Ziegfeld Girl.