What is London's royal society?

Formally founded 15th July 1662 was the royal society of London

reaspond wuts up dugs

Antoni van Leeuwenhoek

I read the whole section about it in my chemistry book and i could not find anything about similarities.

Check a really good science library. If you don't know where one is, ask your local librarian, or even better go to a local college and check with the chemistry or physics departments; if there's one...