Alan Wilfahrt:
ff.
Alan Wilfahrt:
history of O the letter o
Alan Wilfahrt:
O the letter o
Alan Wilfahrt:
Oannes.
Alan Wilfahrt:
Obcordate Leaflets of the Common Wood-sorrel.
Alan Wilfahrt:
Obelisk "Cleopatra's Needle" in Central Park, New York.
Alan Wilfahrt:
Obi, as worn by a Japanese dancer.
Alan Wilfahrt:
Oblanceolate Leaf.
Alan Wilfahrt:
Oblique Leaf of Begonia.
Alan Wilfahrt:
obol Half-obol of Athens.
Alan Wilfahrt:
Obovate Leaves.
Alan Wilfahrt:
Obsidian Microstructure of Porphyritic Obsidian.
Alan Wilfahrt:
Obtected Pupa of Sphinx ligustri.
Alan Wilfahrt:
Ocarina.
Alan Wilfahrt:
Occipital Bone.
Alan Wilfahrt:
Ocean. Sir John Murray estimates of area and depths
Alan Wilfahrt:
Ocelot. (Felis pardalis)
Alan Wilfahrt:
Octagonal Coin. A, obverse: B, reverse.
Alan Wilfahrt:
Octandria Example of the Octandria; Flower of a Heath.
Alan Wilfahrt:
Octastyle Temple. Plan of the Parthenon.
Alan Wilfahrt:
Octopus Eight-armed Octopus.
Alan Wilfahrt:
Odometer Attached to a Wagon-wheel.
Alan Wilfahrt:
Odontophores Teeth from Odontophores.
Alan Wilfahrt:
Odontoscope. g, gag; m, mirror; l, electric light.
Alan Wilfahrt:
Offset Pipe-coupling.
Alan Wilfahrt:
Ogee.
Alan Wilfahrt:
Ogham Alphabet.
Alan Wilfahrt:
Ogives. 1. Equilateral. 2. Obtuse. 3. Lancet. 4. Moorish.
Alan Wilfahrt:
Oil-press.
Alan Wilfahrt:
Oil-well Rig.
