By 1850, Luanda was one of the greatest and most developed Portuguese cities in the vast Portuguese Empire outside Mainland Portugal, full of trading companies, exporting ( together with Benguela ) palm and peanut oil, wax, copal, timber, ivory, cotton, coffee, and cocoa, among many other products.

The method is named after its inventor, the Danish scientist Hans Christian Gram ( 1850 – 1938 ), who developed the technique while working with Carl Friedländer in the morgue of the city hospital in Berlin.

By 1850, Luanda was one of the greatest and most developed Portuguese cities in the vast Portuguese Empire outside Mainland Portugal, full of trading companies, exporting ( together with Benguela ) palm and peanut oil, wax, copal, timber, ivory, cotton, coffee, and cocoa, among many other products.

After 1850 Gerace developed along the coast, forming a new centre Gerace Marina, to house new public buildings and a railway station.

Following 1850, the province's economy developed with the introduction of sheep farming.

A landing in the city's present-day George Rogers Park is thought to have been developed by Durham around 1850 for lumber transport ; another landing was near the Tryon Creek outlet into the Willamette.

Immigrants from Germany, mostly Lutheran and Catholic, dominated the city after 1850 and developed their own newer German celebrations, and influences, such as the Turner societies, gymnastics, and band music.

Zarzuela, a native form of opera that includes spoken dialogue, is a secular musical genre which developed in the mid 17th century, flourishing most importantly in the century after 1850.

From 1850 to 1874, another notable land owner, Amos Matthews, had a farm of that — with the exception of the largely natural parcel where the Kelso Home for Girls ( currently Towson YMCA ), was later erected — was wholly developed into the neighborhoods of West Towson, Southland Hills and other subdivisions beginning in the middle 1920s.

With the arrival of the railroad in 1850, Stockbridge developed as a summer resort for the wealthy of Boston and other major cities.

Around 1850, the first traction engines were developed from these, and were widely adopted for agricultural use.

At some point between 1850 and 1880, a local legend developed about the " Chalvey Stab Monkey " involving an organ grinder and a stabbed monkey ; the first person to get blind drunk on the anniversary of the monkey's funeral is declared " Mayor of Chalvey ".

The Irish nationalist and republican movements that developed after 1850 often harked back emotively to the former chiefs ' losses, but without ever suggesting that they be reinstated.

Around 1850 a gum made from paraffin wax was developed and soon exceeded the spruce gum in popularity.

By 1850 the surrounding area had become a centre for mercantile activity, with the Merchants House moving to the square in 1877, and the square itself, which had been developed into a private garden for the surrounding townhouses, became an established public space, after frequent disturbances and pulling down of railings by a disgruntled mob.

Young Yale developed an early affinity for portrait painting, but about 1850 decided to assist his father in improving bank locks and to study mechanical problems.

During the 19th century, the top hat developed from a fashion into a symbol of urban respectability, and this was assured when Prince Albert started wearing them in 1850 ; the rise in popularity of the silk plush top hat possibly led to a decline in beaver hats, sharply reducing the size of the beaver-trapping industry in North America, though it is also postulated that the beaver numbers were also reducing at the same time.

This reaction was developed by Alexander Williamson in 1850.

The Upper Falls was the site of Upper Falls Lock and Dam and Edward Kenna, who also developed a sawmill at Upper Falls around 1850, was lockmaster ; his son, John Edward Kenna, served as United States Senator from West Virginia.

They became popular in industrialised countries from around 1850, when the first self-propelled portable steam engines for agricultural use were developed.

The breed was developed between 1850 and 1891 by Captain John Edwardes, at Sealyham House, Pembrokeshire.

August Schleicher ( 1850 ) more explicitly developed the concept of areal relationships as opposed to genetic ones, and Franc Miklošič ( 1861 ) studied the relationships of Balkan Slavic and Romance more extensively.

The first counties, both in the Czech lands and Slovakia, developed from domains in 1850 by the decision of the Imperial government of Austria ( they've also been called processus ( slúžnovský okres ) in Slovakia since the 1860s ).

The township of Cessnock developed from 1850, as a service centre at the junction of the Great North Road from Sydney to the Hunter Valley, with branches to Maitland and Singleton.

Henry Bessemer worked on the problem of manufacturing cheap steel for the purposes of ordnance production from 1850 to 1855 when he patented his method.

* Alexander Twining-an American contemporary who patented a similar machine in 1850 and 1853.

Some of the " type-writing " machines invented between Burt's 1829 patented machine and Sholes ' 1867 type-writer are " The Projean Machine " ( 1833 ), " The Thurber Machine " ( 1843 ), " The Foucault Machine " ( 1843 ), " O. T. Eddy's machine " ( 1850 ), " The Fairbanks machine " ( 1850 ), " J. M. Jones ' machine " ( 1850 ), " William Hughes ' machine " ( 1851 ), John M. Jones " mechanical Typographer " ( 1852 ), " Thomas ' typograph " ( 1854 ), " The Beach typewriter " ( 1856 ), " The Francis Typewriter " ( 1857 ), " The Hansen Machine " ( 1865 ), " The Livermore Printing Device " ( 1863 ), " Peeler Writing Machine " ( 1866 ), and " The Sholes and Hidden Typewriter " ( 1867 ) invented by three men ( C. Latham Sholes, Samuel W. Soule, Carlos Glidden ).

The second was the bar-machine first patented by John B. Fairbanks on September 17, 1850.

The third was the plate-machine first patented by Oliver T. Eddy on November 12, 1850.

The process was patented by Alexander Parkes in 1850.

Kendall made another friend in Henry Parkes, who was editing The Empire from 1850 to 1857 and published a few of his youthful verses.

During December 1850, Parkes founded the Empire newspaper.

In 1850, at a time when the combined population of Field of Mars Common and Castle Hill numbered fewer than 3, 000 people, Henry Parkes approved, on behalf of the Board of National Education in New South Wales, the appointment of local patrons for the commencement of Pennant Hills Public School.

Alexander Parkes handed in three patents concerning the process patent number 13118 in June 11, 1850, patent number 13673 and patent number 13997 in March 8, 1852.

Young took out a patent on his process and the resulting products in 1850, and built the first truly commercial oil-works in the world at Bathgate in 1851, using oil extracted from locally mined torbanite, shale, and bituminous coal.

While many workplaces through history have been crowded, dangerous, low-paying and without job security, the concept of a sweatshop has its origins between 1830 and 1850 as a specific type of workshop in which a certain type of middleman, the sweater, directed others in garment making ( the process of producing clothing ), under arduous conditions.

The terms sweater for the middleman and sweating system for the process of subcontracting piecework were used in early critiques like Charles Kingsley's Cheap Clothes and Nasty, written in 1850, which described conditions in London, England.

That very important state variable was first recognized and denoted by Clausius in 1850, but he did not then name it, and he defined it in terms not only of work but also of heat transfer in the same process.

The collodion process is said to have been invented, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray in about 1850.

The quality and range of the color was sometimes severely limited, as in the chemically complicated " Hillotype " process invented by American Daguerreotypist Levi Hill around 1850.

This 1850 engraving shows the different stages in the process of making tea in Assam.

Producing images by the lost-wax process reached its peak during from 750 to 1100, and still remained prevalent in south India between 1500 and 1850.

This process of sequestration and demoralization culminated in 1850 with the appropriation by the City of Utica of the Oneida Stone, a long-standing symbol of the Nation ( Wonderley 23-24, 28-29 ).

In the fall of 1850, construction began, with Beard, Church and Company of Derby, Connecticut the general contractor as chosen in a bidding process.