Finally something for you on the law blog - you lucky lucky people.
Firstly if you've not already done so go and have a look at http://www.carbolicsmokeball.co.uk/ for more detail on that famous case. You can even see a picture of Mrs Carlill - she lived to a ripe old age so perhaps the smokeball worked on her after all...
Secondly you will shortly (or may already have if you're whizzing along with Miss Standing) come across the important and controversial consideration case of Williams v Roffey. The judgment in full can be read here. If you can't stomach that, there's a nice summary of it here.
Below is a pic of the flats in question that caused all the trouble - Twynholme Mansions in ThatLondon: