: Casgliadau ac Ymchwil

One of the best reasons for housing heritage collections inside buildings is that the building keeps the weather out. Paintings, fossils, books and skeletons are best kept dry, and walls and roofs protect our collections (as well as staff and visitors) from the elements.

In addition, many of the objects in our collections also need specific temperature and humidity ranges to prevent them from suffering damage. Too high a humidity can cause swelling of wood, for example, initiating cracks in objects, or, if humidity gets even higher, mould growth. Therefore, National Museum Cardiff has a complicated air conditioning system. This system is more than 40 years old and has been maintenance-intensive and inefficient for some time.

We are happy to report that, after several years of planning, we have just completed the installation of new chillers and humidifiers at National Museum Cardiff. The purpose of chillers in the museum is to provide cold water – for lowering the temperature of galleries and stores in the summer, and for dehumidifying stores and galleries if there is too much moisture in the air. Humidifiers achieve the opposite effect: they increase humidity in stores and galleries if it is too low. Low humidity is usually a problem during the winter months – you may have experienced your skin drying out at home when you have the heating on in winter. To prevent our collections drying out we cannot apply skin cream; instead, we maintain a minimum level of humidity in stores and galleries.

The chillers and humidifiers have been commissioned now, and are working well. They have already proved that the control of our indoor environments is better than it was before. A very positive side effect of the new technologies is that they are much more efficient than the old equipment. In fact, they are so efficient that we are anticipating to shave almost 50% off our annual electricity bill for National Museum Cardiff, saving the planet more than 500 tonnes of carbon dioxide every year. That is the equivalent of taking 100 cars off the road, or the average energy a family home uses in 38 years.

By investing in such new technologies, Amgueddfa Cymru – National Museum Wales continues to ensure the safe storage and display of the nation’s heritage collections, whilst at the same time making a massive contribution towards the National Assembly’s commitment to reduce carbon emissions by 80% by 2050 (Environment Wales Act 2016).

Find out more about Care of Collections at Amgueddfa Cymru - National Museum Wales here and follow us on Twitter. Follow the progress of the maintenance works during the coming months in 2019 on Twitter using the hashtag #museumcare.

Our summer exhibition, Snakes! gives us a sneak peek into the secretive and captivating life of the snakes of the world. We are posting a series of snake blogs over the summer to share some of our snake related stories.

At the back of our Snakes gallery we have made a map of the snakes of the world. Here you can find out which are the longest, the fastest, even the one that has the longest fangs! And this is where you'll find a picture of rarest snake in the world – the Saint Lucia racer.

Unbelievably, there are fewer than 20 individuals of this relatively small, non-venomous snake left in the world. And they are all confined to a tiny, nine-hectare islet off the mainland of the Caribbean island of Saint Lucia.

Fauna & Flora International (FFI), is an international conservation charity dedicated to protecting our planet’s threatened wildlife and habitats. In partnership with Durrell Wildlife Conservation Trust and national agencies, FFI is working to bring back these snakes from the brink of extinction.

This species was once the second most common snake on Saint Lucia. So what happened?

In the 19^th century small Asian mongooses were introduced to the island. They found the ground dwelling racers easy prey, and their population plummeted to the point that they were thought to be extinct. So now an emergency project has been set up to protect the remaining racers and spread the word about their importance.

But with such low numbers, can they really be brought back?

The answer is a resounding yes! Until fairly recently, the world’s rarest snake was considered to be the Antiguan racer, another Caribbean snake species found only on a handful of offshore islands in Antigua and Barbuda. In 1995, only 50 individuals remained, but thanks to the help of FFI and other national and international organisations, they are making a comeback. Their numbers have increased 22 fold in that time, with numbers now exceeding 1,100 individuals. So there is still hope.

How did they do it? They have focused a lot of work on eradicating the harmful invasive species – particularly ship rats – that have been introduced to the islands and introduced strict controls to help protect these sensitive ecosystems.

Snakes are often maligned and misunderstood, so they have also focused on changing attitudes and raising awareness. This has been so successful that many Antiguans and Barbudans have become enthusiastic advocates of their unique snake and its unique island ecosystem.

So, the hope is that by protecting the remaining Saint Lucia racers, and the tiny islet they live on, their populations will begin to stabilise and grow. It is so inspiring to hear a positive conservation story. I wish them all the luck in the world.

If you are interested in finding out more about snakes – come down to our exhibition! It is on until 15 September. For more details check out our What’s On page.

You can find out more about Saint Lucia racers and the work of FFI here, here and here.

You can find out more about Antiguan racers and the work of FFI here.

You can find out more about FFI here.

You can find out more about Durrell Wildlife Conservation Trust here.

You can read our read our previous blogs here and here.

Cliciwch yma am fideo Cymraeg.

A volvelle is a rotating paper ‘wheel chart’, often found in early astronomy or mathematical books.

They were constructed from a number of circles, layered over each other, and fastened together in the centre with string so that they could spin. Volvelles were typically used to make calculations or predictions.

The design was based on astrolabes, very thin engraved metal discs that when rotated in various configurations made calculations, and were often employed as navigational devices. As astrolabes were quite costly to make, the paper versions were introduced as a cheaper alternative.

We believe that volvelles came to Europe from the Arabic world during the 11th and 12th centuries in medicinal and astronomical works. In the 16th century, books describing how to construct and use your own volvelle often came with printed sheets, so that the buyer could cut up and assemble their own.

We have a number of these types of books in our Vaynor Collection of astronomical books donated to the Museum in 1939 by John Herbert James of Vaynor Cottage, near Merthyr Tydfil. Some of these books still have their volvelles intact and working!

One example is a mid-16th century copy of The Sphere by Johannes de Sacrobosco. Johannes de Sacrobosco wrote Tractatus de Sphaera or De Sphaera Mundi, meaning On the Sphere of the World, in the thirteenth century when he was teaching at the University of Paris.

It remained a standard text for students of mathematics and astronomy for centuries, which is why we have this version from 1577, revised and expanded.

In 1548 Gemma Frisius produced his version of Peter Apian’s Cosmographia, a book which had originally been published in 1524, and was said to be one of the most popular books on cosmography ever published. Apian, more commonly known as Petrus Apianus, was a mathematician, designer of sundials, and publisher of manuals for astronomical instruments from his print shop in Ingolstadt, Bavaria. He was well known for his volvelles designs which is why they are sometimes also known as "Apian wheels", and this edition of Cosmographia features a number of them, although they are in a very fragile state.

However, in a few of our Vaynor books, the owner never got around to assembling the volvelles, and instead the printed sheets were bound in at the back of the book like regular pages.

This book Quadrans Apiani astronomicus... from 1532 is also by Peter Apian, and explains the use of quadrants, scientific instruments for measuring angles or time, derived from astrolabes, and used very much by sailors for navigation.

Our copy contains printed sheets for the construction of a volvelle, all the separate sections can be cut out and then assembled. The largest piece would serve as the base, and then all the corresponding circles would all be stacked up on top of each other in order, until the smallest was on the top. Then the whole thing would be secured through the middle with string.

We’ve reproduced a set from the Quadrans book, so have a go at constructing your own volvelle by downloading and printing this worksheet. You can use a split pin to secure the circles instead of string!

Back in 1998, long before I started my current job as Senior Textile Conservator at St Fagans National Museum of History, I spent two work experience placements at the museum, helping my predecessor Clare Stoughton-Harris.  I had just started on my 3-year post-grad course in Textile Conservation the previous year.  The course was based in apartments within Hampton Court Palace.  I saw an ad for a placement at St Fagans on the Centre’s noticeboard and decided to apply. A few weeks later, I found myself driving over to Cardiff to start my placement.

My first stint was for 3 weeks, over the Easter Holidays.  The work mainly consisted of preparing St Fagans castle for re-opening after refurbishment, so it involved a lot of surface cleaning, but we also got around to wet cleaning a carpet.  The image shows Clare sponging the carpet in the detergent bath in the studio. 

When I came back in the summer, my project was to improve the storage conditions of the shoe collection.  Most shoes were stored on open shelving, with several pairs stacked on top of each other.  Some were not wrapped at all and were gathering dust, and others were wrapped in yellowed newspaper as you can see in the 2 pictures below.  That’s me, unwrapping and examining some children’s shoes!

As they were, the shoes were also very inaccessible as it was impossible to know which pair was wrapped in each bundle of tissue paper.  So I remember assembling endless flat pack boxes and re-packing the shoes… so here they were in their lovely new storage boxes:

Once the contents of the Old Costume Store moved into the Collection Centre at St Fagans in 2008, the project was improved upon by adding thumbnail images of each pair, clearly attached to the outside of the box, so here they are in their current configuration!

From 1998, it took another 7 years, and jobs with the National Trust, in Norfolk, a private studio in Dublin and 2 years at the British Museum before I was became the Senior Textile Conservator at Amgueddfa Cymru. Now I have the occasional pleasure of overseeing students myself and can return the favour of giving them the chance to expand their experience and help them along their career path!

Written by Caitlin Jenkins, MSc Conservation Practice student, Cardiff University

I’m Caitlin, an MSc Conservation Practice student from Cardiff University and I have just finished my summer placement at National Museum Cardiff. I’ve been working with conservator Julian Carter on the natural history collections, with the last five weeks focused on preparations for the museum’s summer exhibition, Snakes!

The first week saw me elbow deep in jars full of snakes, as we worked our way through getting 32 fluid preserved specimens ready for display. Although the snakes had already undergone previous treatment, many were very old and in need of attention. After checking the jars’ condition, we added or replaced conservation fluid as required.

Many snakes needed to be rehomed in new jars. Some preservationists use wires or mountings, but we chose to follow the natural shape of the snake and its flexibility to guide its positioning within the jar. My favourite of the specimens was a grass snake that had been preserved in the act of eating a toad (with one leg dangling from its mouth...poor toad!)

I was also able to assist with preserving a new addition to this collection – a boa constrictor named Aeron. After formaldehyde injections and several fluid changes, we needed to find an extra-large shiny new jar, because he was over a metre long. Aeron has now bagged a starring role as the centrepiece of his display case. I really enjoyed this experience, and it has given me a fantastic insight into the complexities and potential of fluid preservation.

My other major project was the treatment of three snake models destined to be part of a large interactive exhibit within Snakes! Two were painted plaster models of a rattle snake and a king cobra. These incredibly detailed antiques were perhaps cast from real specimens. The third was a moulded rubber and polystyrene grass snake model from the 1960s. The models had survived in remarkably good condition given their age, they just needed a little ‘zhoosh’ to make them display-ready. Light brushing and swabbing with water and mild detergent was all that was needed to remove ingrained dust. Any loose or flaking areas were consolidated to ensure that they didn’t become further detached from the model.

Nevertheless, small elements were missing from each model. The grass snake model posed a specific conservation risk, as rubber and plastics can become unstable over time. Its tongue became fragmented during cleaning and unfortunately proved too badly degraded to reattach. Using photographs of the real-life snake species as a guide, I fashioned replacement tongues for this and the king cobra model from a strong plant-based fibre known as Japanese tissue. They were secured in place and painted to blend them into the jaw area. Being able to see the immediate improvement after each snake ‘facelift’ was very satisfying - this took cosmetic surgery to a whole new level!

Finally, the finished models were settled into their new home for the summer – a large interactive exhibit affectionately dubbed ‘the snake pit’. I’d become so immersed in their treatment over the last five weeks that I was kind of sad to see them go – but it was satisfying to see them looking their best and used in the spirit for which they were originally created.

I’ve really enjoyed working on Snakes! from preparation to completed display – it’s been a fantastic experience. If you are in the vicinity of the museum, pleasssse pay them a visit.

The exhibition runs till 15th September 2019, entry charges do apply, and all your contributions go towards bringing you even bigger and better exhibitions in the future. Please note that there is no live handling of the snakes within the exhibition, there will be a series of bookable handling sessions throughout the summer as well as a Venom themed Open Day in August. To find out more about all of this, go to our What's On page.