Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals."Natural history," inWikipedia, the Free Encyclopedia

• The Natural History of Man I as it appeared in the May 1872Popular Science Monthly
• The Natural History of Man II as it appeared in the June 1872Popular Science Monthly
• Natural History of Man V as it appeared in the September 1874Popular Science Monthly

• Clews in Natural History as it appeared in the May 1879Popular Science Monthly

• Geographical Evolution I as it appeared in the August 1879Popular Science Monthly
• Geographical Evolution II as it appeared in the September 1879Popular Science Monthly

• A brief account of microscopical observations made on the particles contained in the pollen of plants byRobert Brown, including "Additional remarks on active molecules.", as it appeared inJohn Joseph Bennett (ed.) (1866)The miscellaneous botanical works of Robert Brown, Esq., D.C.L., F.R.S.1:433–461.
• The Microscope and its Misinterpretations as it appeared in the June 1875Popular Science Monthly

• The Migrations of Men III as it appeared in the July 1872Popular Science Monthly
• Spontaneous Generation I as it appeared in the February 1878Popular Science Monthly
• Micro-Organisms and their Effects in Nature as it appeared in the October 1879Popular Science Monthly
• The Age of Ice as it appeared in the October 1879Popular Science Monthly
• Croll's Climate and Time as it appeared in the April 1880Popular Science Monthly
• Prehistoric Records as it appeared in the February 1880Popular Science Monthly
• The Glacial Man in America as it appeared in the November 1880Popular Science Monthly
• The Aquarium as it appeared in the October 1874Popular Science Monthly
• Food and the Development of Man as it appeared in the September 1874Popular Science Monthly
• On Some of the Results of the Expedition of H M S Challenger as it appeared in the May 1875Popular Science Monthly
• On the Border Territory Between the Animal and the Vegetable Kingdoms as it appeared in the April 1876Popular Science Monthly
• "White, Gilbert," inDictionary of National Biography, 1885-1900, London: Smith, Elder, & Co. (1885–1900) in 63 vols.

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy."Biology," inWikipedia, the Free Encyclopedia

• Biology for Young Beginners I as it appeared in the January 1875Popular Science Monthly
• Biology for Young Beginners II as it appeared in the March 1875Popular Science Monthly
• The Study and Teaching of Biology as it appeared in the January 1877Popular Science Monthly
• On the Study of Biology as it appeared in the March 1877Popular Science Monthly

• On the Origin of Species, 1859 byCharles Darwin
• The Origin of Species, 1872 byCharles Darwin
• The Descent of Man, 1874 byCharles Darwin
• A Critique of the Theory of Evolution, 1916 byThomas Hunt Morgan
• Creation by Evolution, 1928 ed. byFrances Mason
• Genesis of Species, 1871
• Evolution and the After-Life as it appeared in the May 1875Popular Science Monthly
• What American Zoologists Have Done for Evolution: 1876 Speech II as it appeared in the December 1876Popular Science Monthly
• A Problem in Human Evolution as it appeared in the June 1879Popular Science Monthly
• The Evolution of Organic Form as it appeared in the November 1880Popular Science Monthly
• "The First Presentation of the Theory of Natural Selection" inPopular Science Monthly,74 (April 1909)
• "The Origin of the Theory of Natural Selection" inPopular Science Monthly,74 (April 1909)
• "Predarwinian and Postdarwinian Biology" inPopular Science Monthly,74 (April 1909)
• "Darwinism in the Theory of Social Evolution" inPopular Science Monthly,75 (July 1910)
• "Darwin's Probable Place in Future Biology" inPopular Science Monthly,76 (January 1910)

• Heredity and Race-Improvement as it appeared in the December 1873Popular Science Monthly
• The Phenomena of Heredity as it appeared in the November 1873Popular Science Monthly
• On the Hereditary Transmission of Acquired Psychical Habits as it appeared in the July 1873Popular Science Monthly
• The History of Twins, as a Criterion of the Relative Powers of Nature and Nurture as it appeared in the January 1876Popular Science Monthly

• The Genesis of Sex as it appeared in the December 1879Popular Science Monthly
• Modes of Reproduction in Plants as it appeared in the June 1884Popular Science Monthly
• "Reproduction," inEncyclopædia Britannica (11th ed., 1911)

• Hints towards the formation of a more comprehensive theory of life
• Monera, and the Problem of Life I as it appeared in the August 1878Popular Science Monthly
• Monera, and the Problem of Life III as it appeared in the October 1878Popular Science Monthly
• Monera, and the Problem of Life II as it appeared in the September 1878Popular Science Monthly
• Longevity as it appeared in the September 1882Popular Science Monthly

• Plant-Cells and their Contents as it appeared in the July 1882Popular Science Monthly
• Protoplasm as it appeared in the July 1882Popular Science Monthly
• The Properties of Protoplasm as it appeared in the November 1875Popular Science Monthly
• The Cell-State as it appeared in the December 1882Popular Science Monthly

• Scientific Method in Biology, 1898 byElizabeth Blackwell
• A Biographical Sketch of an Infant
• De partibus animalium

• Voluntary Motion as it appeared in the August 1878Popular Science Monthly
• Dry-Rot in Timber as it appeared in the August 1879Popular Science Monthly
• Protoplasm and Life as it appeared in the October 1879Popular Science Monthly
• Vegetable Phosphorescence as it appeared in the April 1880Popular Science Monthly
• New Views of Animal Transformations as it appeared in the March 1880Popular Science Monthly
• The Profusion of Life as it appeared in the November 1880Popular Science Monthly
• Degeneration II as it appeared in the July 1881Popular Science Monthly
• The Phenomena of Death as it appeared in the July 1881Popular Science Monthly
• Degeneration I as it appeared in the July 1881Popular Science Monthly
• Is Electricity Life? as it appeared in the February 1873Popular Science Monthly
• The Germ Theory as it appeared in the April 1882Popular Science Monthly
• How Plants Resist Decay as it appeared in the August 1882Popular Science Monthly
• The Ethics of Vivisection as it appeared in the July 1882Popular Science Monthly
• A Partnership of Animal and Plant Life as it appeared in the October 1882Popular Science Monthly
• Progress of the Backboned Family as it appeared in the April 1883Popular Science Monthly
• The Prevention of Hydrophobia as it appeared in the July 1884Popular Science Monthly
• Vivisection as it appeared in the April 1874Popular Science Monthly
• Water Turned to Blood as it appeared in the December 1873Popular Science Monthly
• The Chain of Species I as it appeared in the July 1874Popular Science Monthly
• The Genesis of Woman as it appeared in the July 1874Popular Science Monthly
• Microscopic Architects as it appeared in the October 1874Popular Science Monthly
• Thermal Death-Point of Living Matter I as it appeared in the October 1874Popular Science Monthly
• Thermal Death-Point of Living Matter II as it appeared in the December 1874Popular Science Monthly
• Animal Phosphorescence as it appeared in the August 1875Popular Science Monthly
• Professor Tyndall's Recent Researches as it appeared in the April 1876Popular Science Monthly
• Our Common Moulds as it appeared in the August 1876Popular Science Monthly
• Organisms and their Media as it appeared in the June 1876Popular Science Monthly
• The Present Status of the Subspecies as it appeared inThe Condor
• The Variation of Animals and Plants under Domestication
• Land Mollusca of North America (north of Mexico)
• Zoonomia

• Class QH on Project Gutenberg

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