... It is seen also about the native huts, and, so far as I could learn, it was the American cotton, so influenced by climate as to be perennial... 
David Livingstone 「Missionary Travels and Researches in South Africa」
... The sides of these ranges are generally very precipitous, and there are rivulets between which are not perennial...
David Livingstone 「Missionary Travels and Researches in South Africa」
..." To feed these a vast number of gushing fountainspoured forth for ages a perennial supply...
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
...This plant is indigenous, perennial, and is foundfrom the coast of Labrador to the shores of the Gulf of Mexico, growingin great abundance on wet, marshy ground...
Robert Jennings 「Sheep, Swine, and Poultry」
...There was but one cause for the diminutionof the birds, which was widespread, annual, perennial, continuous, andenormously destructive—their persecution by mankind...
Edith M. Patch 「Bird Stories」
...The discovery of pygmies in Netherlands New Guineaby the Expedition has drawn public attention to aproblem of perennial interest to ethnologists...
A. F. R. Wollaston 「Pygmies and Papuans」
...At this point (Halona)the Zuñi River is perennial, and furnishes a plentiful supply of waterat all seasons of the year...
Victor Mindeleff and Cosmos Mindeleff 「A Study of Pueblo Architecture: Tusayan and Cibola」
...Along the main walks, or alleys, the borders for perennial plants, aswell as the currant and gooseberry bushes, should be made—for theplow should run parallel to, and not at right angles with them...
Lewis Falley Allen 「Rural Architecture」
...The satellites of this planet, in their ever-varying phases, areobjects of perennial interest...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The Heavens afford us a perennial store of treasure, wherein thethinker, poet or artist can find inexhaustible subjects ofcontemplation...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...It is quite probable thatan appreciable part of the solid substance of our globe may have beenderived from meteoric matter which descends in perennial showers uponits surface...
Robert Stawell Ball 「The Story of the Heavens」
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