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Australian Mineral Specimen – Gypsum Selenite with Copper

A very good example of gypsum in selenite form with even crystals of 5mm nicely impregnated with copper salts giving a soft green hue.

Very good example from Pernatty Lagoon, Stuart Shelf South Australia.

Nice crystals with even copper tone

$40.00

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Australian Mineral Specimen – Tasmanian Crocoite

The mineral emblem of Tasmania the rare and beautiful Crocoite.

A sparkling example with large dense crystals of a very even strong colour. A super example. Glued down and cased to preserve its beauty

Get some Crocoite in Your Life!!

$90.00

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Australian Mineral Specimen – Prehnite – Mullaley

A nice example of the mineral Prehnite – Calcium Aluminium Silicate [Ca2Al(AlSi3O10)(OH)2] in a botryoidal (grape like) formation. With an even green colouring.

From Mullaley NSW

Nice example of the botryoidal form

$40.00

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Quality Scientific Model of a Hydra

A very good example of a hand painted biological model from the 1960’s. Now collectable and 1906 “scientifically decorative”.

The Hydra is a small fresh water animal with remarkable properties. These predatory little creatures possess radial symmetry and can be found in many un-polluted fresh water ponds. Multi-cellular and only a few millimetres long they lend themselves to microscopic study. They have an incredible regenerative capacity which makes them extremely interesting … they do not appear to age or die of old age.

The tubular body is secured by a sticky foot called the basal disc. At the other end a mouth opening is surrounded by a number of tentacles each of which is clothed in stinging cells (oouch!). The nasty bits explosively discharge a dart of neurotoxins into the prey sometimes in their hundreds (double ooouch!). They reproduce by growing “buds” on the body wall which become miniature Hydra that break away (convenient). They also have another more complex manner of reproduction when times get tough for food. All of this and more makes the Hydra a very interesting little beauty to study.

Hard to get quality model of the common but very mysterious everlasting Hydra

$240.00

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John Browning – Victorian Table Spectroscope c1890

An original prismatic lacquered brass spectroscope by the leading London based Victorian maker John Browning. Special quality as would be expected from a Browning instrument. Original fitted Mahogany Case with carrying handle, which has lost its lock as often, no damage to the case.

The table is engraved and Vernier works as it should. Telescope and collimator. The adjustable slit is in perfect condition and has its cover or protector which is usually missing. The optics are in A1 condition. The telescope arm is fully articulated and can be locked into position. The flint glass prism looks original to the instrument and has its original oxidised table housing. The telescope length is 20cms fully in 30cm fully extended. The instrument stands 25cms high.

Quality Victorian Spectroscope Top Maker

$840.00

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Early Scientific Engraving – A System of Chemistry – Rennolds -1788

A fine hand coloured engraving of various items of chemical apparatus some in fiery use. Engraved by Rennolds and published by Alexander Hogg at the Kings Arms No 16 Paternoster Row, London in 1788. This was the same period in which Hogg was publishing Cook’s Voyages.

Included in the Royal Cyclopaedia and is one of the best early engravings depicting scientific apparatus. 35cm by 20 cm to the border of the engraved area with wide margins.

Price $120.00 unframed $260.00 framed in charcoal black frame within cream mat with black core.

Chemistry when it was all about combustion and distillation

$80.00

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