الرئيسية / علوم طبيعية
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- A New Genus of Pennsylvanian Fish (Crossopterygii, Coelacanthiformes) from KansasJoan Echols
- Ecological Observations on the Woodrat, Neotoma floridanaHenry S. Fitch
- Breves palavras sobre a cultura da OliveiraAvelino Nunes d'Almeida
- A Field Study of the Kansas Ant-Eating Frog, Gastrophryne olivaceaHenry S. Fitch
- Comments on the Taxonomy and Geographic Distribution of Some North American RodentsE. Raymond Hall
- OrchidsJames O'Brien
- The Girl Aviators and the Phantom AirshipMargaret Burnham
- The Fairy School of Castle FrankGrant Balfour
- Pharos, The Egyptian: A RomanceGuy Boothby
- The Autobiography of a MonkeyAlbert Bigelow Paine
- Geological Report on Asbestos and its Indications, in the Province of Quebec, CanadaLucius J. Boyd
- The Subspecific Status of Two Central American SlothsE. Raymond Hall
- The Mammals of Warren Woods, Berrien County, Michigan Occasional Paper of the Museum of Zoology, Number 86Lee R. Dice
- New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642Nathan Banks
- A New Pocket Gopher (Genus Thomomys) From Wyoming and ColoradoE. Raymond Hall
- The Old English HerbalsEleanour Sinclair Rohde
- Mammals of Northwestern South DakotaKenneth W. Andersen
- Springtime and Other EssaysFrancis Darwin
- The King of the Golden River; or, the Black Brothers: A Legend of Stiria.John Ruskin
- Seeds of Michigan WeedsW. J. Beal
- Illustrative Anecdotes of the Animal KingdomSamuel G. Goodrich
- Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and CarnivoresE. Raymond Hall
- The Barren Ground Caribou of KeewatinFrancis Harper
- Unexplored!Allen Chaffee
- The Lost Temples of XantoosHowell Calhoun
- The Elements of Botany, For Beginners and For SchoolsAsa Gray
- Fossil Ice Crystals: An Instance of the Practical Value of "Pure Science"Johan August Udden
- De Reis om de Wereldتشارلز داروين
- History of PhosphorusEduard Farber
- Little Robins Learning to FlyMadeline Leslie
- On the magnet, magnetick bodies also, and on the great magnet the earth a new physiology, demonstrated by many arguments & experimentsWilliam Gilbert
- Fur Farming A book of Information about Fur Bearing Animals, Enclosures, Habits, Care, etc.A. R. Harding
- Descripção de algumas especies novas ou pouco conhecidas de crustaceos e arachnidios de Portugal e possessões portuguezas do ultramarFelix Antonio de Brito Capello
- The Cocoanut: With reference to its products and cultivation in the PhilippinesWilliam Scrugham Lyon
- British Butterflies: Figures and Descriptions of Every Native SpeciesW. S. Coleman
- The Old Riddle and the Newest AnswerJohn Gerard
- The Mechanism of LifeStéphane Leduc
- Wild Bees, Wasps and Ants and Other Stinging InsectsEdward Saunders
- The Wonderful Visitهربرت جورج ويلز
- Myology and Serology of the Avian Family Fringillidae: A Taxonomic StudyWilliam B. Stallcup
- Mammals taken Along the Alaska HighwayRollin H. Baker
- Cacao Culture in the PhilippinesWilliam Scrugham Lyon
- The Geological Story of the Isle of WightJ. Cecil Hughes
- Food Habits of the Thrushes of the United StatesF. E. L. Beal
- Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky MountainsHenry S. Fitch
- Descriptions of New Hylid Frogs From Mexico and Central AmericaWilliam Edward Duellman
- The Academy Boys in CampS. F. Keene
- Florida: An Ideal Cattle StateFlorida State Live Stock Association
- Beautiful Shells of New Zealand An Illustrated Work for Amateur Collectors of New Zealand Marine Shells, with Directions for Collecting and Edward George Britton Moss
- Old Farm Fairies: A Summer Campaign In Brownieland Against King Cobweaver's PixiesHenry C. McCook
- The Jonathan PapersElisabeth Woodbridge Morris
- Rustic Sounds, and Other Studies in Literature and Natural HistoryFrancis Darwin
- Bee Hunting: A Book of Valuable Information for Bee Hunters Tells How to Line Bees to Trees, Etc.John Ready Lockard
- Remarks on some fossil impressions in the sandstone rocks of Connecticut RiverJohn Collins Warren
- Fifty Years a Hunter and Trapper Autobiography, experiences and observations of Eldred Nathaniel Woodcock during his fifty years of hunting E. N. Woodcock
- Catholic Churchmen in Science [First Series] Sketches of the Lives of Catholic Ecclesiastics Who Were Among the Great Founders in ScienceJames J. Walsh
- Fox Trapping: A Book of Instruction Telling How to Trap, Snare, Poison and Shoot A Valuable Book for TrappersA. R. Harding
- On Germinal Selection as a Source of Definite VariationAugust Weismann
- Mink Trapping: A Book of Instruction Giving Many Methods of Trapping A Valuable Book for Trappers.A. R. Harding
- Science of Trapping Describes the Fur Bearing Animals, Their Nature, Habits and Distribution, with Practical Methods for Their CaptureElmer Harry Kreps