"Siphonaptera" is a name used [1] to refer to the following rhyme by Augustus De Morgan ( Siphonaptera being the biological order to which fleas belong):
Great fleas have little fleas upon their backs to bite 'em,
And little fleas have lesser fleas, and so ad infinitum .
And the great fleas themselves, in turn, have greater fleas to go on;
While these again have greater still, and greater still, and so on. [2]
The rhyme appears in De Morgan's A Budget of Paradoxes (1872) along with a discussion of the possibilities that all particles may be made of clustered smaller particles, "and so down, for ever", and that planets and stars may be particles of some larger universe, "and so up, for ever". [2]
The lines derive [3] from part of Jonathan Swift's long satirical poem "On Poetry: A Rapsody" of 1733:
The Vermin only teaze and pinch
Their Foes superior by an Inch.
So, Nat'ralists observe, a Flea
Hath smaller Fleas that on him prey,
And these have smaller yet to bite 'em,
And so proceed ad infinitum:
Thus ev'ry Poet, in his Kind
Is bit by him that comes behind[.] [4]
Lewis Fry Richardson adapted the poem to meteorology in 1922: [5]
In poetry, a hendecasyllable is a line of eleven syllables. The term may refer to several different poetic meters, the older of which are quantitative and used chiefly in classical poetry, and the newer of which are syllabic or accentual-syllabic and used in medieval and modern poetry.
Frederic Ogden Nash was an American poet well known for his light verse, of which he wrote more than 500 pieces. With his unconventional rhyming schemes, he was declared by The New York Times to be the country's best-known producer of humorous poetry.
Flea, the common name for the order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by ingesting the blood of their hosts. Adult fleas grow to about 3 millimetres long, are usually brown, and have bodies that are "flattened" sideways or narrow, enabling them to move through their hosts' fur or feathers. They lack wings; their hind legs are extremely well adapted for jumping. Their claws keep them from being dislodged, and their mouthparts are adapted for piercing skin and sucking blood. Some species can leap 50 times their body length, a feat second only to jumps made by another group of insects, the superfamily of froghoppers. Flea larvae are worm-like, with no limbs; they have chewing mouthparts and feed on organic debris left on their hosts' skin.
Lewis Fry Richardson, FRS was an English mathematician, physicist, meteorologist, psychologist, and pacifist who pioneered modern mathematical techniques of weather forecasting, and the application of similar techniques to studying the causes of wars and how to prevent them. He is also noted for his pioneering work on fractals and a method for solving a system of linear equations known as modified Richardson iteration.
"Turtles all the way down" is an expression of the problem of infinite regress. The saying alludes to the mythological idea of a World Turtle that supports a flat Earth on its back. It suggests that this turtle rests on the back of an even larger turtle, which itself is part of a column of increasingly larger turtles that continues indefinitely.
In Latin literature, Augustan poetry is the poetry that flourished during the reign of Caesar Augustus as Emperor of Rome, most notably including the works of Virgil, Horace, and Ovid. In English literature, Augustan poetry is a branch of Augustan literature, and refers to the poetry of the 18th century, specifically the first half of the century. The term comes most originally from a term that George I had used for himself. He saw himself as an Augustus. Therefore, the British poets picked up that term as a way of referring to their endeavours, for it fit in another respect: 18th-century English poetry was political, satirical, and marked by the central philosophical problem of whether the individual or society took precedence as the subject of the verse.
An Essay on Criticism is one of the first major poems written by the English writer Alexander Pope (1688–1744), published in 1711. It is the source of the famous quotations "To err is human; to forgive, divine", "A little learning is a dang'rous thing", and "Fools rush in where angels fear to tread".
Pseudomathematics, or mathematical crankery, is a mathematics-like activity that does not adhere to the framework of rigor of formal mathematical practice. Common areas of pseudomathematics are solutions of problems proved to be unsolvable or recognized as extremely hard by experts, as well as attempts to apply mathematics to non-quantifiable areas. A person engaging in pseudomathematics is called a pseudomathematician or a pseudomath. Pseudomathematics has equivalents in other scientific fields, and may overlap with other topics characterized as pseudoscience.
Ad infinitum is a Latin phrase meaning "to infinity" or "forevermore".
A hyperparasite, also known as a metaparasite, is a parasite whose host, often an insect, is also a parasite, often specifically a parasitoid. Hyperparasites are found mainly among the wasp-waisted Apocrita within the Hymenoptera, and in two other insect orders, the Diptera and Coleoptera (beetles). Seventeen families in Hymenoptera and a few species of Diptera and Coleoptera are hyperparasitic. Hyperparasitism developed from primary parasitism, which evolved in the Jurassic period in the Hymenoptera. Hyperparasitism intrigues entomologists because of its multidisciplinary relationship to evolution, ecology, behavior, biological control, taxonomy, and mathematical models.
French poetry is a category of French literature. It may include Francophone poetry composed outside France and poetry written in other languages of France.
"Here be dragons" means dangerous or unexplored territories, in imitation of a medieval practice of putting illustrations of dragons, sea monsters and other mythological creatures on uncharted areas of maps where potential dangers were thought to exist.
"The Swimmer" is a poem by the Australian poet Adam Lindsay Gordon. The poem is from his last volume of poems Bush Ballads and Galloping Rhymes published in 1870, when he was living at Melbourne. In The Poems of Adam Lindsay Gordon, it is grouped among "Poems Swinburnian in Form and Pessimism, but full of the Personality of Gordon."
The cat flea is an extremely common parasitic insect whose principal host is the domestic cat, although a high proportion of the fleas found on dogs also belong to this species. This is despite the widespread existence of a separate and well-established "dog" flea, Ctenocephalides canis. Cat fleas originated in Africa but can now be found globally. As humans began domesticating cats, the prevalence of the cat flea increased and it spread throughout the world.
The following outline is provided as an overview of and introduction to poetry:
Stephen Duck was an English poet whose career reflected both Augustan interest in "naturals" and its resistance to classlessness.
"Sea Surface full of Clouds" is a poem from the second, 1931, edition of Wallace Stevens's first book of poetry, Harmonium. It was first published in 1924, so it is restricted by copyright. However, brief parts of it are quoted here as fair use, and the whole poem is available elsewhere on the Internet.
Augustus De Morgan was a British mathematician and logician. He is best known for De Morgan's laws, relating logical conjunction, disjunction, and negation, and for coining the term "mathematical induction", the underlying principles of which he formalized. De Morgan's contributions to logic are heavily used in many branches of mathematics, including set theory and probability theory, as well as other related fields such as computer science.
Classical Chinese poetry forms are poetry forms or modes which typify the traditional Chinese poems written in Literary Chinese or Classical Chinese. Classical Chinese poetry has various characteristic forms, some attested to as early as the publication of the Classic of Poetry, dating from a traditionally, and roughly, estimated time of around 10th–7th century BCE. The term "forms" refers to various formal and technical aspects applied to poems: this includes such poetic characteristics as meter, rhythm, and other considerations such as vocabulary and style. These forms and modes are generally, but not invariably, independent of the Classical Chinese poetry genres. Many or most of these were developed by the time of the Tang dynasty, and the use and development of Classical Chinese poetry and genres actively continued up until the May Fourth Movement, and still continues even today in the 21st century.
Sophia Elizabeth De Morgan was an English spiritualist writer and activist.