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 1830, she was sent with her brother Daniel to live with their aunt in London.

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, 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 1852 the town had grown to include a ferry across the Willamette, a warehouse owned by Francis Pettygrove and Alanson Beers, a steamboat landing, a granary owned by the Hudson's Bay Company, and a stagecoach office.

Around 1793, in response to attacks by well-armed Cree and Assiniboines, large groups of Gros Ventres burned two Hudson's Bay Company trading posts.

Around the same time, East Bay Ray had tried to pressure the rest of the band to sign to the major record label Polydor Records ; Biafra stated that he was prepared to leave the group if the rest of the band wanted to sign to the label, though East Bay Ray asserts that he recommended against signing with Polydor.

Around two million years ago the first of many continental glaciers of the Laurentide Ice Sheet moved southward from the Hudson Bay area, initiating the Pleistocene glaciation.

Around noon, the party drove to one of Holt's favourite swimming and snorkelling spots, Cheviot Beach on Point Nepean near Portsea, on the eastern arm of Port Phillip Bay.

Around this time, the Pennsylvania Colony and the Massachusetts Bay Colony also claimed the territory as their own, but New York did not enforce its territorial claim.

* Around Bantry Bay between the suburbs of Killarney Heights and Forestville to the West and Wakehurst Parkway ( and Manly Dam Reserve ) to the East.

* Around Jervis Bay: Huskisson, Vincentia, Greenwell Point, Culburra Beach, Currarong, Callala Beach, Callala Bay, Orient Point, Hyams Beach, Sanctuary Point, St Georges Basin, Basin View, Falls Creek, Tomerong, Wandandian, Bream Beach, Wrights Beach ;

" Around 2009 Chickasaw officials considered starting a plan to secede from the Mobile County school system after Mobile County officials considered closing the Chickasaw magnets, which together have a combined total of 14 % Chickasaw residents ; the rest of the students came from other locations, including the unincorporated area of Grand Bay.

Around this time they coined the term ' East Bay hardcore ' to describe their genre of music.

* Photo Gallery of Georgian Bay and Around

Around the late 1840s, Charles Nordhoff observed work gangs engaged in a type of labor called " cotton-screwing " in Mobile Bay.

Around the Bay Area, other seals can be found at the historic plaza in Sonoma on the 1846 Bear Flag Revolt monument ( 1914 ), the Elihu M Harris State Office Building in Oakland, the San Mateo County History Museum in Redwood City ( a mosaic dating to 1910 ), the Circle of Palms Plaza in San Jose, the site of California's first state capitol, and in front of Colton Hall in Monterey, the site of the 1849 Constitutional Convention.

* Around the Bay Road Race, a 30 km road race held every March in Hamilton, Ontario, Canada

Around 18, 000 years ago, the Green Bay lobe of the Wisconsin glaciation crept in from the east, butting up against the Baraboo Hills.

Around the time that Eaton started teaching at Harvard, an Antinomian controversy had erupted in the Massachusetts Bay Colony.

Around 1627 he began to trade for furs with the native Susquehannock on the shores of the Chesapeake Bay and two of its largest tributaries, the Potomac and Susquehanna Rivers.

Around this time, whaling stations were already operating in Te Awaiti Bay.

Copps continued as mayor until 1976 when he was forced to retire following a heart attack while running in the Around the Bay Road Race.

Around one mile north of Shek O beach, after passing the Shek O Country Club, is Big Wave Bay.

Inuit village near Frobisher Bay, from Hall's Arctic Researches and Life Among the Esquimaux, 1865 Around 1857, Hall became interested in the Arctic and spent the next few years studying the reports of previous explorers and trying to raise money for an expedition, primarily intended to learn the fate of Sir John Franklin's lost expedition.

Around this time the North Bay was also added to the house.