Cinchona Jamaica tropical station of the N.Y. Botanical Garden Public domain photograph of botanical garden, free to use, no copyright restrictions image - Picryl description
Cinchona Jamaica tropical station laboratory Public domain scan of drawing, 20th-century botanical illustration, free to use, no copyright restrictions image - Picryl description
Joseph Priestley, photograph of portrait presented to the United States National Museum by the American Chemical Society
Mount pelee eruption stage 2
Mount pelee eruption stage 1
Eruption of mount pelee july 16 1902
Course of mount pelee eruption towards st pierre
Bruce photographic telescope
Jean Condorcet (1743-1794)
Red flier kite in the air
Testing of one of Mabel 2 boats
he new West Point
Letter from Robert Henry Thurston
Calvin M Woodward
Otto H Tittmann
Simeon Eben Baldwin
Queen Sophie Charlotte
House of Leibnitz at Hanover
Cathode ray beam and deflection by magnet
Institutes of Physics and Chemistry at Tokyo
Grand plan of the university
Methods of air supply and ventilation
Meteorological station on El Misti
Pierre Louis Moreau de Maupertuis
Institutes of Zoology and Geology
The Curies in their laboratory 1903-1904
Side view of the ballroom
Cupples hall 2 dept of mechanical and electrical engineering
Wilder Dwight Bancroft
Charles Emerson Beecher
Edwin H Hall
Thomas H MacBride
Palace of education and social economy
Plan of the St Louis Exposition grounds
Emmanuel Kant
US Department of Agriculture laboratory first floor
Portrait of Leibnitz
Interior of the Zoological museum
Colleges of Law and Literature at Tokyo
Imperial University of Tokyo
USDA Administration building plan of second floor
New US Department of Agriculture building
Edward L Mark
Tokyo college of engineering
en:Godefroy Guillaume Leibnitz
George I of Great Britain
Limair sanitarium, Luray Virginia
Guillaume Godefroy Leibnitz
Cavern air ventilation of the room
The city of Arequipa
Frederic II the Great
Arequipa station of Harvard university
Immanuel Kant
View from Limair sanitarium Luray Virginia
The temporary station on Mount Harvard
Eduard Zeller Deutsch: Eduard Zeller, deutscher Theologe und Philosoph. Abgebildet in einem pelzgefüttertem Mantel, wahrscheinlich Wiesel oder Nerz
Palmer Hall Colorado college
Hargrave box kite
A winged tetrahedral cell and a sixteen celled kite
Sixteen celled tetrahedral kite
Triangular cells
Sixteen celled kite carrying five pound load
Noddy gull A. stolida
Gulf weed and marine animals beached by storm gales
Mastic point Andros Island Bahamas
Riding hall and post headquarters of West Point
John Huston Finley
Chemical and mechanical arts building seen from college grounds
Kite section folded up
End view of Mabel 2
End view of one of Victor 1 cells
Drawings created by automatism 1
George Wallace Melville
The first West Point Academy
Model of Mabel 2 in the air
Comparative crop values of the usa vertical table
Lodge Muirhead syntonic receiver
Slaby Arco syntonic transmitter and receiver
The West Point Chapel
Drawings created by automatism
Track of loggerhead turtle in the sand of Tortugas
Gymnasium and sub freshman building
Marconi transmitter and receiver
The aerodrome ready for launching
The queen's stairway in nassau bahamas
Stroboscope for examining vocal chord vibration
Floating kite built of tetrahedral cells
Composed sixty four celled kite red flier
Four and sixty four celled kites
William Gilson Farlow
White flier front view
City college of New York
Kite built of twelve triangular cells
Giant kite built of triangular cells
South gates at West Point
St Nicholas terrace facade main building
Fort Jefferson parade ground Dry Tortugas