Chemical business travellers in London can use these "Animals on the Underground" to while away the time on the train. Metro newspaper ran a competition to find out how many animals their readers thought had been spotted on the map, and it turned out to be 23. The Animals website is now so popular it receives over 700,000 hits a month.
In the spirit of the summer period, but nothing to do with chemicals and something to do with the London underground, here is a sticky question for all of you chemical time wasters out there: which London tube station has in its name 5 consecutive consonants?