Search results
Results from the WOW.Com Content Network
The tempest prognosticator, also known as the leech barometer, is a 19th-century invention by George Merryweather in which leeches are used in a barometer. The twelve leeches are kept in small bottles inside the device; when they become agitated by an approaching storm, they attempt to climb out of the bottles and trigger a small hammer which ...
His best-known invention was the Tempest Prognosticator—a weather predicting device also called "The Leech Barometer". [2] It consists of twelve glass bottles containing leeches, which, when disturbed by the atmospheric conditions preceding a storm, climb upwards, triggering a small whalebone hammer which rings a bell.
Macrobdella decora is a medium-sized leech, growing between 5 and 8.5 cm (2.0 and 3.3 in) long, and weighing from 1.48 to 3.69 grams (0.052 to 0.130 oz). [7]: 67 [8]: 155 It has a dark green, brown or olive-green back with a line of 20 or so small orange or red dots down the middle, and two corresponding sets of black dots on its sides. Its ...
The approach of a line of thunderstorms could indicate the approach of a cold front. Cloud-free skies are indicative of fair weather for the near future. [69] A bar can indicate a coming tropical cyclone. The use of sky cover in weather prediction has led to various weather lore over the centuries. [10]
A handful of families have taken children as young as 2 years old to Mount Everest Base Camp in recent years. ... The blood turned out to be coming from a leech on Cindy’s stomach. At another ...
The leech sometimes emerges from the water to hunt for earthworms. [4] [7] Like other leeches, Haemopis sanguisuga is a hermaphrodite. The testes mature first and the ovaries later in the organism's life. A pair of leeches will line up with the clitellar regions in contact, and sperm is passes by the one acting as male to the female gonopore.
The first tide predicting machine (TPM) was built in 1872 by the Légé Engineering Company. [11] A model of it was exhibited at the British Association meeting in 1873 [12] (for computing 8 tidal components), followed in 1875-76 by a machine on a slightly larger scale (for computing 10 tidal components), was designed by Sir William Thomson (who later became Lord Kelvin). [13]
Commonly known as jawed land leeches, these annelids are known from subtropical and tropical regions around the Indian and Pacific Ocean. [1] Well-known Haemadipsidae are for example the Indian Leech ( Haemadipsa sylvestris ) and the yamabiru or Japanese Mountain Leech ( Haemadipsa zeylanica ).