What to do on a travel day? Luckily we are ‘only’ going to the UK, leaving at 15:20 and probably reaching my parents’ house about 23:00. It should still be light by then. In the meantime Antonia did maths while I packed, read some Horrid Henry, and we found time to look at this butterfly wing under the microscope. The butterfly died on our terrace, so we seized our chance.