Some 19th-century or earlier experimental engines used external flames, exposed by valves, for ignition, but this becomes less attractive with increasing compression.

Some Lollards may have shown traces of antitrinitarian tendency, though some 19th-century writers overemphasized this because they misconceived the ground of the Lollard rejection of the worship of the human Christ.

Some of the New Age movement's constituent elements appeared initially in the 19th-century metaphysical movements: Spiritualism, Theosophy, and New Thought and also the alternative medicine movements of chiropractics and naturopathy.

Some 19th-century classical liberals, notably Gustave de Molinari and Frédéric Bastiat, were known advocates of an emergent society and wrote about the concepts in detail.

Some 19th-century archaeologists thought they had found underground rooms in the Orkney islands resembling the Elfland in Childe Rowland.

Some of Smithson's later writings recovered 18th-and 19th-century conceptions of landscape architecture which influenced the pivotal earthwork explorations which characterized his later work.

Some 18th-and 19th-century commentators, beginning with Lewis Morris, associated Ida with the figure of Welsh tradition known as Flamdwyn (" Flame-bearer ").

Some 19th-century researchers made more general claims about pixie origins, or have connected them with the Puck, ( Cornish Bucca ) a mythological creature sometimes described as a fairy ; the name Puck is also of uncertain origin.

Some 19th-century pamphlets expressed it in this form: against a philosophical constitution ( liberalism, based on ideology ), a historical constitution is proposed ( based on history, and the teachings of the Church ).

Some authors claim the inscription was completely a 19th-century fabrication, some claim that the first 17 lines are genuine, some that the inscription was fabricated by King Lithai ( a later Sukhothai king ); most Thai scholars still hold to the idea of the inscription's authenticity.

Some 16th-century lute tablatures have been reconstructed into authentic instrumental arrangements, however, the first major source of information comes from 19th-century collections of folk songs, and work done by musicologist Hanny Christen.

Some of this literature includes note errors and 19th-century editorial changes that are not in keeping with historically informed performance practice.

Some 19th-century examples mix the dotted and even styles.

Some commercial and custom revolvers and single-shot pistols ( such as the Ruger Blackhawk, T / C Contender and others ) employ high-pressure loads that are dangerous in the Single Action Army and other vintage arms chambered for the 45 Colt cartridge, especially 19th-century " pre-smokeless " revolvers which should be fired ( if at all ) only with black powder or light smokeless loads.

Some important figures related to the history of Santiago del Estero are Colonel Juan Francisco Borges, who led the local battalion of the Army of the North during the Argentine War of Independence ( and an ancestor of writer Jorge Luis Borges ), the 19th-century painter Felipe Taboada, as well as Francisco René and Mario Roberto Santucho, founders of the Partido Revolucionario de los Trabajadores ( Workers ' Revolutionary Party, PRT ) and the Ejército Revolucionario del Pueblo ( People's Revolutionary Army, ERP ), the two leading guerrilla organizations during the wave of unrest in the 1970s.

Some 19th-century works suggest that at one time Bloxwich was a settlement in the ancient manor of Wednesbury.

Some 19th-century salons were more inclusive, verging on the raffish, and centered around painters and " literary lions " such as Madame Récamier.

Some 19th-century ( gunfighter ) pā built specifically for defense against gunpowder weapons sometimes even provided overlapping fields of fire for the defenders.

Some 19th-century industrialists who were called " captains of industry " overlap with those called " robber barons ".

Some 19th-century critics attacked the book, on the grounds that it normalized vice and corrupt living.

Some 19th-century Western authors use the name " Blue River " as the " colloquial name " for the Minjiang, supposedly based on the local Chinese colloquial name " Qingshui " ( 清水, " Clear water ").

Some 19th-century scholars theorized that Meili's mother is Jörð, a goddess and the personified Earth.

Some recent exhibits have included 19th-century furniture handcrafted in East Tennessee, portraits of George Washington, and architecture features of the historic buildings on campus.

Some historians who have studied his story have stated that surprisingly little evidence of Potocki's existence has yet been discovered other than several 19th-century sources citing earlier oral histories, and they therefore consider that he most likely did not exist.

Some authors have speculated that Ælle may have led the Saxon forces at this battle, while others reject the idea out of hand.

Some authors, however, consider alkaloids a special case of amines.

Some authors classify as pseudoalkaloids such compounds such as ephedrine and cathinone.

Some authors see a centralized peer – review process as less relevant and publish on their home pages or on unreviewed sites like arXiv.

Some authors also define an alkali as a base that dissolves in water.

Some sources include the requirement that the curve may not cross the line infinitely often, but this is unusual for modern authors.

Some authors even argue that the language moved westward during Late Antiquity, after the fall of Rome, into the north part of Hispania in which Basque is spoken today.

Some authors require in addition that μ ( C ) < ∞ for every compact set C. If a Borel measure μ is both inner regular and outer regular, it is called a regular Borel measure.

Some authors use the convention B < sub > 1 </ sub > = − 1 / 2 and state Bernoulli's formula in this way:

Some authors deviate from the definition just given by identifying each object with its identity morphism.

Some authors have claimed this to be untrue, showing that the pollutant and irritant count within cars is consistently higher, ( presumably because of limited circulation of air within the car and due to the air intake being directly in the stream of other traffic ).

Some authors use countable set to mean a set with the same cardinality as the set of natural numbers.

As noted above, this terminology is not universal: Some authors use countable to mean what is here called " countably infinite ," and to not include finite sets.

Some authors, however, write about water clocks appearing as early as 4000 BC in these regions of the world.

Some authors take a different perspective.

Some authors have used " basal " differently to mean a clade that is " more primitive " or less species-rich than its sister clade ; others consider this usage to be incorrect, and many now discourage the use of that term altogether to avoid such implications.

Some authors of technical documents may prefer either mouse devices or the more generic pointing devices.

Some scholars feel that in addition to its spiritual components, portions of the text merely reflect the human authors ' beliefs and feelings about God at the time of its writing, and their cultural sensibilities.

Some authors have not succeeded in adapting to the changes brought about by modern technology ; others, such as Carl Hiaasen, have.

Some Western scholars have expressed doubts over Laozi's historical existence, claiming that the Tao Te Ching is actually a collection of the work of various authors.

Some authors use " compatible with ~" or just " respects ~" instead of " invariant under ~".

Some authors use " compatible with " or just " respects " instead of " invariant under ".

Some authors also require the domain of the Euclidean function be the entire ring R ; this can always be accommodated by adding 1 to the values at all nonzero elements, and defining the function to be 0 at the zero element of R, but the result is somewhat awkward in the case of K. The definition is sometimes generalized by allowing the Euclidean function to take its values in any well-ordered set ; this weakening does not affect the most important implications of the Euclidean property.

Some authors use, or Cpq, instead of, and, or Epq, instead of, especially in contexts where is used for other purposes.