The Secret Museum. Molly Oldfield

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      ‘YOU COULD SAY THIS ENTIRE room is a hidden treasure,’ said the curator of the Linnean Society as the door swung open to their basement storage facility. She flicked the lights on to reveal a wood-panelled room lined with 1,600 books and drawers filled with 14,000 plants, 3,198 insects and 1,564 shells, which were the private collection of Carl Linnaeus, the man who named the natural world.

      Carl von Linné (1707–78), who was born Carl Linnaeus, was a Swedish botanist. He standardized the system of scientifically naming plants with two Latin names, the genus (e.g. Ginkgo), followed by the species (e.g. biloba). This is called binomial nomenclature, and it is now used internationally for all plants and animals, even us humans. We are in the genus Homo and our species is sapiens, hence Homo sapiens, ‘the wise man’. Linnaeus came up with our name.

      It’s a really clever system if you think about it, because anyone around the world can understand what plant or creature you are talking about. It’s essential for botanists, zoologists and museum curators caring for collections of specimens.

      When a new species is discovered, scientists must explain to other scientists what it is and what it looks like. So the first thing they do is pick one member of the species as a holotype, or ‘type’, specimen. This is the example of the new species that will forever define it and is often the first example of the species found. Most of these ‘types’ are in museums around the world; thousands of them are in this room because Linnaeus gave them their scientific names.

      There is not, as yet, a type for Homo sapiens. A palaeontologist named Edward Drinker Cope (1840–97) asked for the job in his will, but he turned out to have syphilis, so was struck off the list. Arnold Schwarzenegger has been proposed. Many say it ought to be Linnaeus, as he came up with the idea. His body is well preserved in the cathedral in Uppsala, Sweden, so there is a chance of this happening yet.

      The specimens housed at the Linnean Society used to be in Uppsala, in Linnaeus’s home, where he lived with his family. When Linnaeus died, Joseph Banks (1747–1820) – the director of Kew Gardens and a passionate botanist – tried to buy the collection, but in the end a young student of his, James Edward Smith, bought it with money he borrowed from his father, and shipped the whole lot to London, where he founded the Linnean Society.

      This is the cave of riches that I went to see. It is just inside the entrance to the Royal Academy of Arts. I met the librarian, Lynda Brooks, in the library, and we ventured downstairs to the basement, where the collection lives. She turned a key that opened a door into Linnaeus’s world.

      The entire room smells like a lovely combination of old books and wood polish. The top shelves are filled with books Linnaeus wrote himself, and his reference books. The lower drawers and shelves are filled with thousands of insect, shell and plant specimens collected by him and by his ‘apostles’ – his students, who collected around the world for him. These men of science would also act as pastors, priests or doctors whilst on collecting expeditions.

      We began with the plants. Linnaeus pressed each one carefully, described it and gave it a scientific name, and then stored it away. Later, these were parcelled up, so each plant is now a brown paper package tied up with green string, each one stacked upon another. We unwrapped one package and, inside, we found the type specimen for Delphinium. Two hundred and fifty years after Linnaeus named it Delphinium (after the Latin for ‘dolphin’, because of the shape its flower makes as it opens, like a dolphin leaping out of the waves), it is still a vivid blue colour because it has been kept in storage, out of the light. This is just one in his library of thousands of plants.

      We also unwrapped what was for Linnaeus a very special flower, Linnaea borealis, which was named after him and became his signature flower. If ever you see a painting of him, look for the flower. He usually has it draped through his fingers. When alive, it is pink, and its delicate petals carpet the floor of woodland in Sweden. At night, the pink burns in the darkness. The type specimen in the archive has turned brown over the centuries, unlike the delphinium. Pink and red flowers lose their vibrancy more quickly than blue and yellow ones.

      Scientific names aren’t just for scientists. They tell stories. Buttercups are in the Ranunculus genus. They often grow near water and ranunculus is the Late Latin word for ‘little frog’, a species also found near the water. Water lilies are in the genus Nymphaea, after the water nymphs in Greek myths. The laurel Kalmia was named by Linnaeus for his Swedish student Pehr Kalm; the black mangrove Avicennia he named for the Persian physician Avicenna. He also reused classical names: Acer (maples), Quercus (oaks). The only plant Linnaeus named after a female body part is a blue vine popularly called a ‘butterfly pea’; he gave it the genus Clitoria. If you look up your favourite plant, it is bound to have a good story hiding in its scientific name.

      The same goes for animals. Some animals Linnaeus named descriptively, like the southern flying squirrel, Glaucomys volans (‘the white mouse that flies’); in others, he added things that made him smile. He named the blue whale – the largest animal that has ever lived on earth – Balaenoptera musculus. In Latin, musculus means ‘little mouse’. He named the house mouse at the same time: Mus musculus. There are no mammals in the basement room of the Linnean Society – though some do still survive in Sweden – but there are a lot of fish pressed on to paper, their skin flattened as if they were flowers, as well as corals, shells and insects.

      There is also, in among them, a little box that contains pearls made by Linnaeus. They are the first artificial pearls ever cultured in a mollusc. He made the pearls by jamming a piece of limestone into a freshwater mussel, Unio pictorum (the ‘painter’s mussel’, so called because artists would use the shallow valves to mix their pigment), and holding it there so the mussel would create a pearl around it. Then he put the mussel back into the river for six years, giving the pearl time to grow.

      The pearls are small and roundish, apart from one elongated brown one that looks like it went a bit wrong. One has been cut in half, so I could see the irritant he put inside it to make the mussel form the pearl. It looks like a seed in the middle of the pearl.

      Linnaeus sold his secret in 1762 to a Swedish merchant called Peter Bagge who got a permit from the king to make pearls, but even though he paid 6,000 dalars (more than £93,000 today) for a monopoly on the right to make pearls, he never got around to making any. Linnaeus once said that he wished he’d become famous for creating these pearls rather than for classifying nature. After taking a good look, we put them back in their box, in their drawer, and closed it shut.

      Next, we took down some books. The first was a green leatherbound book with ‘LINNAEUS’ embossed in gold letters on the front. It was his journal from a trip he made to Lapland. It is filled with his notes, in his slanting handwriting, on the people, flowers and creatures of Lapland, and wonderful – if not that competent – drawings of local life.

      We turned the pages and saw his charming sketches of ploughs, fish, skis, insects, coral, local Laplanders, embroidery СКАЧАТЬ