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Voyager Rare Books Maps & Prints » Products » Scientific Instruments, Specimens, Books and Collectables

Scientific Instruments, Specimens, Books and Collectables

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  • Azurite “Sun” – Copper Mineral, the form, Unique to Malbunka Copper Mine near Areyonga, Northern Territory.

    Azurite “Sun” – Copper Mineral, the form, Unique to Malbunka Copper Mine near Areyonga, Northern Territory.

    A very nice clean example of a decent sized azurite sun with a couple of smaller examples in the usual kaolinite matrix from the Malbunka Mine.

    Azurite formed by the oxidation and weathering of copper deposits – Cu3(CO3)2(OH)2 and this specific indeed unique “sun” structure formed at depth and with high pressure. Monclinic and comes with a variety of colour depths this one Royal to Dark Blue.

    The main sun is 45 mm in diameter and has good crystal definition around its edge. The whole sample weighs 80 gm.

    Azurite “Sun” structure unique to Australia.

    $100.00

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  • Erect-Crested Penguin – Lance Richdale – 1950

    Erect-Crested Penguin – Lance Richdale – 1950

    This is an offprint from the “The Emu” the then official organ of the Royal Australasian Ornithologist’s Union.

    The point of this item is that since 1940 the population of this species of Penguin has been in decline and is now categorised as endangered. They nest on the Bounty and Antipodes Islands. Previously on the Auckland, Campbell etc Islands and the Otago Peninsula but no longer. At the time of writing the report Richdale was probably observing the last Otago nesters …

    Typical offprint faded card covers, 18 pages with quite a few images from photographs of the beautifully crested penguins. Maybe there are some clues in here as to what will soon lead to further reductions in breeding.

    Lance Richdale was a big individual in the bird world – he was a Fulbright Fellow at Cornell and a Nuffield Fellow in his field – later in life he spent time at the Zoological Society in London. Author of the Sexual Behavior of Penguins.

    Erect-Crested doing it tough in the far reaches of the Southern Ocean.

    $20.00

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  • Direct Vision Spectroscope [Produces Super Clear Spectra] – c1890-1910

    Direct Vision Spectroscope [Produces Super Clear Spectra] – c1890-1910

    A fine example of a direct vision spectroscope no makers mark but likely manufactured by John Browning of London. Browning was the top London maker of spectroscopes in the late 19th early 20th Century and, was the leader in spectroscope development.

    Victorian or Edwardian in manufacture. Works very well and produces sublime spectra. Contains a train of five alternating crown and flint glass prisms in order to correct for chromatic aberration. Brass body unmarked and with a complete covering of the original gold lacquer. Plush lined case has some rubbing; the clasp still holds firm.

    This design is also known as the “Rainband” spectroscope and was used by gentlemen scientists to detect the spectral bands that appear as water vapour builds prior to a shower of rain. This is the more sophisticated version with a knurled device for altering the slit width and a draw tube for fine focus. cap to protect the slit from dust is original and fits snugly.

    Very good condition working spectroscope

    $190.00

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  • Australian Opal in Coal Matrix – Antique Microscope Slide – W Hemingway – Derby England – c1910

    Australian Opal in Coal Matrix – Antique Microscope Slide – W Hemingway – Derby England – c1910

    W Hemingway was among a group of thin section microscope slide preparers who specialised in Coal measure inclusions in the North of England at the turn of the 19thC.

    This slide is an unusual one for W Hemingway given the Australian subject. And an unusual slide as one could expect the occurrence of opal within coal measures is quite rare and only likely to arise where coal formations are close to if not adjacent to opal fields. There is a hint of coal at Arckaringa north of Coober Pedy … we are not sure where else … so would be interested to hear from anyone with a clue.

    Slide is nicely prepared as would be expected of Hemingway [Preparer included in primary reference Bracegirdle – example Plate 21].

    Rare slide of a rare occurrence opal in coal – circa 100+years.

    $80.00

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  • Huxley – Evolution’s High Priest – Adrian Desmond.

    Huxley – Evolution’s High Priest – Adrian Desmond.

    Author Adrian Desmond a distinguished scientist, University College London and the font of knowledge on the history of the forming and influence of the evolutionary theory. Written several books on the subject and its main promoters …. Darwin, Huxley et al. This monument about Huxley’s later years … and exhaustive biography drawn on, but not only on, five thousand manuscript letters [seems a lot].

    Published by Michael Joseph, London in 1997. Thick octavo, 370 pages, illustrated – some great period images – a very good copy.

    Thomas H Huxley – more that someone’s bulldog …

    PS – Does anyone agree that Michael Palin would make a good Huxley?

    $35.00

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  • Botryoidal Goethite – Yaraka Queensland

    Botryoidal Goethite – Yaraka Queensland

    The mineral Goethite or iron oxy-hydroxide here in a nice botryoidal (resembling grapes) crystal form.

    Found in the Yaraka Boulder Opal Field 100km east of Blackhall, Queensland. Last count remote Yaraka had an official population of 20 – they all get along.

    Small fist sized weighing 350 gm.

    Good lustre to the botryoidal form

    $35.00

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