An exhibition about Alan Turing is coming up at The Manchester Museum on 24 March: he studied Fibonacci numbers in nature. Some of the botany specimens and illustrations from the herbarium are being used in our exhibition to demonstrate his investigations.
These herbarium sheets have very dirty edges and I am cleaning them with chemical sponge, a conservation tool sometimes used for cleaning up fire damaged books.
And one of the illustrations:
- illustration of Pinus mughus, Swiss Mountain Pine