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Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...
Manual Control Chlorinator for the liquefaction of chlorine for water purification, early 20th century. From Chlorination of Water by Joseph Race, 1918. The first continuous use of chlorine in the United States for disinfection took place in 1908 at Boonton Reservoir (on the Rockaway River), which served as the supply for Jersey City, New ...
The link between water and disease was still not well established and in 1873 the president of the New York board of health declared that "although rivers are great natural sewers, and receive the drainage of towns and cities the natural process of purification, in most cases destroys the offensive bodies derived from sewer and renders them ...
Lines on the Antiquity of Microbes", also known simply as "Fleas", is a couplet commonly cited as the shortest poem ever written, composed by American poet Strickland Gillilan in the early 20th century. [1] The poem reads in full:
The material essential for many products and the most common carbohydrate in human diets was made from CO 2 in a cell-free process and could reduce land, pesticide and water use as well as greenhouse gas emissions while increasing food security.
A 100,000-year-old ochre-processing workshop was found at Blombos Cave in South Africa. It indicates that early humans had an elementary knowledge of mineral processing. Paintings drawn by early humans consisting of early humans mixing animal blood with other liquids found on cave walls also indicate a small knowledge of chemistry. [3] [4]
The poem "Maxims I" can be found in the Exeter Book and "Maxims II" is located in a lesser known manuscript, London, British Library, Cotton Tiberius B i. "Maxims I" and "Maxims II" are classified as wisdom poetry, being both influenced by wisdom literature , such as the Havamal of ancient Germanic literature.
Generally, the folk type of poems they are anonymous, and may show signs of having been edited or polished in the process of fixing them in written characters. Besides the Classic of Poetry , or Shijing , another early text is the Songs of the South (or, Chuci ), although some individual pieces or fragments survive in other forms, for example ...