Images Dated 17th April 2013 (page 69)

Estrildid finches
An illustration by M. W. Woodcock from Derek Goodwins Estrildid Finches of the World (1982). Plate 8

Fratercula arctica, Atlantic puffin
Watercolour by Henrik Gr� ld (c. 1926)

Tadorna cristata, crested shelduck
Watercolour by Shigeru Kobayashi (c. 1920)

Francolinus schlegeli, Schlegels Francolin
Watercolour by Henry Jones (c. 1920)

Vanellus vanellus, northern lapwing, Turdus torquatus, ring
Watercolour by Henry Payne (c. 1920)

Delichon urbica, house martin
Watercolour by Henrik Gr� ld (1924-5)

Phasianus colchicus, common pheasant
Watercolour by Frederick William Frohawk (1930). From Birds The Art of Ornithology by Jonathan Elphick, 2004

Ducula pacifica, Macropygia mackinlayi, Columba vitiensis
Watercolour by Thomas Theodore Barnard (1922)

Bubo bubo, northern eagle-owl
Watercolour and pencil by Edward Julius Detmold (c. 1930)

Merops albicollis, white-throated bee-eater
Watercolour by Chloe Elizabeth Talbot Kelly (1960)

Casuarius unappendiculatus, northern cassowary
Watercolour by Henrik Gr� ld (1915). This large flightless bird is native to New Guinea and Australia

Pica pica, common magpie
Chalk drawing by George Edward Lodge (c. 1930). Illustrating Lodges ability to dipict birds in a variety of different positions

Picus viridis, green woodpecker
Pencil and monochrome wash by Frederick William Frohawk sketched from life as seen through a telescope, (c. 1920)

Corvus corax, northern raven
Watercolour by Archibald Thorburn c.(1885-97)

Porphyrio coerulescens, Reunion gallinule
Watercolour by John Gerrard Keulemans c. 1905

Uria lomvia, Brunnichs guillemot, U. aalge, guillemot
Watecolour by Archilbald Thornburn

Parus caeruleus, blue tits (subspecies from the Canary Islan
Watercolour by Henrik Gr� ld c. (1920). Subspecies from top to bottom: degener, teneriffae, palmensis, ambriosus

Artificial bismuth crystals
A specimen of man-made bismuth crystals

Fancolinus nobilis, handsome francolin breast feathers
Watercolour by Henrik Gr� ldof (c. 1934)

Pica pica, common magpie
Watercolour by John Gerrard Keulemans (c. 1896)

Phalacrocorax perspicillatus, spectacled cormorant
Watercolour of by John Gerrard Keulemans (c. 1905)

Catreus wallichii, cheer pheasant
Watercolour by Rajman Singh (c. 1856-64)

Loriculus vernalis, vernal hanging parrot
Watercolour by Margatet Bushby Lascelles Cockburn (c. 1858)

Apteryx australis, brown kiwi
Watercolour by Richard Laishley (c. 1863-83)

Eudyptes pachyrhynchus, Fiordland penguin
Watercolour and pencil by Richard Laishley (c. 1863-83)

Bothrodendron minutifoliu, fossil clubmoss
Shown here is a fossilised leafy twig of a clubmoss originating from Carboniferous rocks near Barnsley, England

Pucrasia macrolopha, koklass pheasant
Watercolour by Rajman Singh (c. 1856-64)

Ammonite selection
Three ammonites as follows: (Left to right) Oistoceras wrighti; Asteroceras obtusum (zonal index species); Tragophylloceras loscombi all specimens originate from the Jurassic rocks near Lyme Regis

Athleta luctator, fossil sea snail
A fossil sea snail (Athleta luctator) dating from the late Eocene rocks around Barton, England

Sigillaria rugosa, fossil club moss
This section of a club moss trunk displays leaf scars where leaves grew straight out from. Club mosses could grow up to heights of 30 metres

Orthoconic nautiloid, originating from near Castleton, England. The more unusual straight-shelled species belonging to the same group as ammonites and to todays living nautilus

Three brachipods
Shown here are three brachiopods (right to left) Dielasma hastata, Martinia glabra and Pleuropugnoides pleurodon. Specimens originate from near Castleton, England

Thalassarche bulleri, Bullers albatross, T. salvini, Salvin
Watercolour by John Gerrard Keulemans (c. 1887-1905)

Absorption spectrum of zircon
Refractometer spectrum of the mineral zircon (zirconium silicate). Ziricon can be found to have a multi faceted crystals

Eudyptes robustus, snares penguin, E. pachyrhynchus, Fiordla
Watercolour by John Gerrard Keulemans (c. 1887-1905)

Cordierite variety Iolite
It is famous for its pleochroism, appearing intense blue in one direction but becoming almost colourless as the stone is turned. Cut stone, faceted girdle, 19.69 ct

Topaz crystal
An imperial topaz crystal from Brazil, length 101mm long. Topaz comprises of (aluminum silicate fluoride hydroxide)

Anser brachyhynchus, pink-footed goose
Watercolour and ink by John Gould (c. 1865). An example of a prelliminary work by Gould in preparation for an illustration which would be published in one of his books

Asbestos purse
Benjamin Franklins Asbestos purse. A crudely plaited purse made from tremolite asbestos. From the Hans Sloane collection. Asbestos is formed of microscopically fibrous crystals

Fossil branches of Calamites
The fossil branches of Calamites sp. bearing leaves and cones; Palaeostachya and Asterophyllites. Specimen discovered in Wales, dating back to the Late Carboniferous period

Some crystal forms of carbon
Seen here are rough diamonds or boarts surrounding a diamond crystal which have been photographed on a base of graphite. Diamond is the hardest known mineral on Earth

Baryte crystals
Yellow prisms of the minreal baryte (BaSO4) on hematite (iron oxide) from Dalmellington Mine, Frizington, Cumbria

Revophone Crystal Set

Objects carved from nephrite jade
A bowl, cabochon, square seal and chinese carving in nephrite jade. Nephrite is actually not a mineral outright, but is a variety of the mineral actinolite

Nycticryphes semicollaris, South American painted snipe
Watercolour and pencil by Elizabeth Gould (c. 1835), this was drawn from a specimen held by the Zoological Society of London

Coal, from the late carboniferous
Coal is formed from fossil plants. The regular pattern on the surface of this 14 cm long piece is the impression of the bark of a fossil tree; Lepidodendron

Tauraco persa, green turaco
Watercolour by Edward Lear (c. 1835), turacos are a family of fruit-eating woodland and forest birds, native to Africa

Alexandrite crystals
A cluster of the gemstone alexandrite trillings, or twinned crystals. This gemstone was named after the Russian Tsar Alexander II. It can appear in both red or green

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