By 1798 Thompson had completed a survey of from Grand Portage, through Lake Winnipeg, to the headwaters of the Assiniboine and Mississippi Rivers, as well as two sides of Lake Superior.

* 1798 – Count Rumford ( Benjamin Thompson ) performs measurements of the frictional heat generated in boring cannons and develops the idea that heat is a form of kinetic energy ; his measurements are inconsistent with caloric theory, but are also sufficiently imprecise as to leave room for doubt.

* David Thompson ( businessman ) ( 1798 – 1871 ), President of New York Life Insurance & Trust Company

The famous Canadian explorer, David Thompson, took shelter from a storm in Cadotte's cabin here in March 1798.

Lumberland was formed from Mamakating in 1798, Thompson in 1803 and part of Forestburgh in1837.

Thompson left Munich in 1798.

In April 1798, he ran for re-election as a Federalist in the 7th District to which Washington County had been re-districted, but was defeated by Democratic-Republican John Thompson.

In 1798, aged seventeen, he wrote his first poem Vernal Walk in imitation of James Thompson.

An Experimental Enquiry Concerning the Source of the Heat which is Excited by Friction, ( 1798 ), Philosophical Transaction of the Royal Society p. 102 is a scientific paper by Benjamin Thompson, Count Rumford that provided a substantial challenge to established theories of heat and began the 19th century revolution in thermodynamics.

* Benjamin Thompson ( politician ) ( 1798 – 1852 ), US congressman from Massachusetts

Explorers and scientists crossing the portage included David Thompson, British explorer of Canada and North West Fur Company cartographer, in 1798 ; Zebulon Pike, early explorer of the American west, in 1805 ; Lewis Cass, American general and explorer, in his unsuccessful 1820 search for the source of the Mississippi River ; Henry Schoolcraft, geologist and explorer, who accompanied Cass in 1820 and led an expedition in 1832 to find the Mississippi's source ; Joseph Nicollet, French geographer and cartographer of the Upper Mississippi, in 1836 ; and Laurence Oliphant, a British explorer and writer, in 1854.

Luigi Galvani ( 1737 – 1798 ) demonstrated that electrical stimulation of nerve produced muscle contraction, and the competing work of Charles Bell ( 1774 – 1842 ) and Francois Magendie ( 1783 – 1855 ) led to the view that the ventral horns of the spinal cord were motor and the dorsal horns sensory.

A major turning point in Chateaubriand's life was his conversion back to the Roman Catholic faith of his childhood around 1798.

In 1798 the French drove him from Rome, and he went to Vienna, as he found no place in his native town of Stuttgart, on account of his conversion.

Belsham's first work of importance, Review of Mr Wilberforces Treatise entitled Practical View ( 1798 ), was written after his conversion to Unitarianism.

Count Rumford's 1798 observations of heat generation during the boring of cannons added more weight to the view that mechanical motion could be converted into heat.

The Renaissance was first defined by French historian Jules Michelet ( 1798 – 1874 ), in his 1855 work, Histoire de France.

George Hadfield was hired on October 15, 1795 as superintendent of construction, but resigned three years later in May 1798, due to dissatisfaction with Thornton's plan and quality of work done thus far.

Together, Wordsworth and Coleridge ( with insights from Dorothy ) produced Lyrical Ballads ( 1798 ), an important work in the English Romantic movement.

During the harsh winter of 1798 – 99, Wordsworth lived with Dorothy in Goslar, and, despite extreme stress and loneliness, he began work on an autobiographical piece later titled The Prelude.

1798 also saw the twelve year old Weber's first published work, six fughettas for piano, published in Leipzig.

Foucault's secondary thesis involved a translation of, and commentary on, the German philosopher Immanuel Kant's 1798 work Anthropology from a Pragmatic Point of View ( Anthropologie in pragmatischer Hinsicht ).

In 1798 Murdoch returned to Birmingham to work in the Soho foundry and continued his experiments with gas, as part of which he lit the interior of the Soho main building, although it is likely that it was lit only in part and not ( at this time ) permanently.

Father Fermín Francisco de Lasuén took up Serra's work and established nine more mission sites, from 1786 through 1798 ; others established the last three compounds, along with at least five asistencias ( mission assistance outposts ).

In October, 1798, David Zeisberger, the same Moravian missionary who had founded many of the original missions in the 1770s, returned to the Tuscarawas Valley to found a new mission, Goshen, from where he continued his work to Christianize the local natives.

In 1798, he had gone to South Africa to work as a missionary among the Xhosa.

John Adams owned none ; George Washington freed his slaves in his will ( his wife independently held numerous dower slaves ); Thomas Jefferson freed five slaves in his will, and the remaining 130 were sold to settle his estate debts ; James Madison did not free his slaves but some were sold to pay off estate debts, and his wife and son retained most to work Montpelier plantation ; Benjamin Franklin freed his slaves ; Alexander Hamilton likely owned slaves and freed them, as he was an officer of the New York Manumission Society ; the society was founded by John Jay, who freed his domestic slaves in 1798, the same year as governor he signed a gradual abolition law in New York.

When he was leaving America after a visit in 1798 during which he collected back pay, Kościuszko wrote a last will, naming Thomas Jefferson the executor and leaving his property and money in America to be used to buy the freedom of black slaves, including Jefferson's, and to educate them for independent life and work.

in 1798 Cuvier published his first independent work, the Tableau élémentaire de l ' histoire naturelle des animaux, which was an abridgment of his course of lectures at the École du Pantheon, and may be regarded as the foundation and first statement of his natural classification of the animal kingdom.

The founder of this group was Rabbi Yitzchak Meir Alter ( 1798 – 1866 ), known as the Chiddushei HaRim after his primary scholarly work by that title.

This work established his literary reputation and gained for him in 1798 an extraordinary professorship at the University of Jena.

Memory is very important to Chahine ’ s most recent work — whether of the " city of my childhood, Alexandria, between the two world wars tolerant, secular, open to Muslims, Christians and Jews " or of a more distant past: such as evoked in Adieu Bonaparte ( 1985 ), based on the cultural aspect of Bonaparte ’ s expedition into Egypt ( 1798 ).

Every year he exhibited work of one class or another: occasionally a public monument in the round, like those of Pasquale Paoli ( 1798 ) or Captain Montague ( 1802 ) for Westminster Abbey, of Sir William Jones for University College, Oxford ( 1797 – 1801 ), of Nelson or Howe for St Paul's Cathedral ; more often memorials for churches, with symbolic Acts of Mercy or illustrations of Scripture texts, both commonly in low relief ( 1801 ), Miss Cromwell, Chichester ( 1800 ), Mrs Knight, Milton, Cambridge ( 1802 ), and many more ; and these pious labours he would vary from time to time with a classical piece like those of his earliest predilection.

Brown's other work included a criticism of Erasmus Darwin's Zoonomia ( 1798 ), and he was one of the first contributors to the Edinburgh Review, in the second number of which he published a criticism of Immanuel Kant's philosophy, based entirely on Villers's French account of it.

After selling Airthrey House in 1798 to Robert Abercromby to obtain funding for his mission work, he bought a home at Auchengray, Lanarkshire in 1809.

The work on the oratorio lasted from October 1796 to April 1798.

Country homes for the landed gentry included: new rooms and remodelling of Wimpole Hall and garden buildings, ( 1790 – 94 ) for his friend Philip Yorke that he met on his Grand Tour ; remodelling of Baronscourt, County Tyrone, Ireland ( 1791 ); Tyringham Hall ( 1792 – 1820 ); the remodelling of Aynhoe Park ( 1798 ); In 1804 Soane remodelled Ramsey Abbey none of his work there now survives ; the remodelling of the south front of Port Eliot and new interiors ( 1804 – 06 ); the Gothic Library at Stowe House ( 1805 – 06 ); Moggerhanger House ( 1791 – 1809 ); for Marden Hill, Hertfordshire, Soane designed a new porch and entrance hall ( 1818 ); remodelling of Wotton House after damage by fire ( 1820 ); a terrace of six houses above shops in Regent Street London, ( 1820 – 21 ) demolished ; Pell Wall Hall ( 1822 ).

Ferguson's research opened the way for many of the achievements of the Celtic Revival, especially those of Yeats and Douglas Hyde, but this narrative of Irish poetry which leads to the Revival as culmination can also be deceptive and occlude important poetry, such as the work of James Henry ( 1798 – 1876 ), medical doctor, Virgil scholar and poet.

In his later years he was engaged on a work entitled Outlines of the Globe, volumes one and two of which appeared in 1798, and volumes three and four, edited by his son David Pennant, in 1800.

In 1798 Landor published " Gebir " the work which established his reputation.

His botanical career began with the help of René Louiche Desfontaines, who recommended Candolle for work in the herbarium of Charles Louis L ' Héritier de Brutelle during the summer of 1798.