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London sinks were originally shallower than Belfast sinks. [5] One plumbing guide in 1921 suggested that the Belfast sink was 38 centimetres (15 in) deep.) [ 7 ] Some believe this was because London had less access to fresh water (and thus a greater need to conserve water), but this theory is now contested.
The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.
Nordisk familjebok third edition 26 volumes, second printing, including not so few coloured posters (like national maps, city maps a poster of all the flags of the world etc) and a huge number of full page black and white portraits. These The additional pages are not enumerated. 1942–1944.
ISO 32000-1:2008 is the first ISO standard for full function PDF. The previous ISO PDF standards (PDF/A, PDF/X, etc.) are subsets intended for more specialized uses. ISO 32000-1 includes all of the functionality previously documented in the Adobe PDF Specifications for versions 1.0 through 1.7.
As the American Civil War commenced, Annie Nahar was a student at the Nantucket High School.Heeding the call of Nantucket native and Quaker activist Anna Gardner for teachers to go South to educate the freedmen, in June 1864, Annie left Nantucket for New Orleans, where she taught school for four years under the auspices of the Freedmen's Bureau, before moving to San Antonio, Texas [8]
At first, the heavier solids were channeled into ditches on the side of the farm and were covered over when full, but soon flat-bottomed tanks were employed as reservoirs for the sewage; the earliest patent was taken out by William Higgs in 1846 for "tanks or reservoirs in which the contents of sewers and drains from cities, towns and villages ...
The sheets were then pasted together at the fold to make a codex with alternate openings of printed and blank pairs of pages. In the 14th century the folding was reversed outwards to give continuous printed pages, each backed by a blank hidden page. Later the sewn bindings were preferred rather than pasted bindings. [41]
Anna Connelly was an American woman who lived from the mid-19th century to the mid-20th century in Pennsylvania.She was the inventor of the predecessor of the modern outdoor fire escape; her invention saved lives, causing it to become a safety component in modern buildings.