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Scientific Instruments, Specimens, Books and Collectables

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  • Quality Scientific Model of a Hydra

    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

    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

    $890.00

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

    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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  • William Bragg – Nobel Laureate – Transactions and Proceedings Royal Society of South Australia Vol XXX – 1906

    William Bragg – Nobel Laureate – Transactions and Proceedings Royal Society of South Australia Vol XXX – 1906

    A good copy in original card cover 373 pages after preliminaries 12 interesting plates with 12 figures in the etc.

    Another historically important edition with three papers by William Bragg. First, on the ionisation of various gases by the alpha particles of radium. Secondly, the alpha particles of Uranium and Thorium. And the third, an extension of the work carried out in the first with a plate showing the construction of the ionisation chamber. Bragg also gets involved in reporting the discovery of radium at Moonta Mines.

    Also of special interest are two paper by Mawson. Mineralogical notes – fetid feldspar and quartz from Umberatana and atacamite from Bimbowrie. On certain new mineral species associated with carnotite in the radio-active ore body near Olary.

    Leading work by Bragg at Adelaide with Mawson

    $120.00

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  • Microscopical Mounts and Mounters – Brian Bracegirdle

    Microscopical Mounts and Mounters – Brian Bracegirdle

    This is the Bible as far as the world of collectors of prepared microscope slides is concerned. For the uninitiated, this is a wonderful pursuit and Brian Bracegirdle (1933 – 2105) was a genius putting this book together. No similar reference exists and it is highly sought after by collectors of scientific historicals.

    Dr Bracegirdle was responsible for receiving the transfer of the Welcome Medical Museum Exhibits to the Science Museum in South Kensington, a formidable achievement. He was a strong personality, a hard taskmaster and like port … his obituary on the Science Museum website is well worth the read.

    This book published in 1998 with the support of the esteemed Quekett Club. By this time, Brian was retired and living in Cheltenham. 225 pages after preliminaries including 60 full page plates of photographs of slide examples by many of the distinguished makers listed and described at the front.

    It should be the ambition of all slide collectors to have at least one good example of every slide mounter in Bracegirdle. Voyager has quite a few and still searching.

    No better guide has been or will be produced.

    Now very hard to find and … who will compile another one?

    $170.00

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  • The Life and Work of Sir William Bragg – Sir Kerr Grant Professor of Physics, Adelaide University

    The Life and Work of Sir William Bragg – Sir Kerr Grant Professor of Physics, Adelaide University

    The John Murtagh Macrossan Memorial Lecture for 1950 published by the University of Queensland in 1952. A First edition in decorated paper covers. Scarce 46 pages with frontispiece. Gift inscription to South Australian legal mind and bibliophile Duncan-Hughes who was finishing his Masters at Trinity College Cambridge in 1909 when William Lawrence Bragg arrived to commence his fruitful time there.

    Rare Bragg item delivered by distinguished physicist

    $60.00

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