Nut harvest in the street

I now have a digital camera and this is my first attempt at trying to upload a picture to my blog - which has failed! Curses!!!

There is a street near me where some of the street trees are nut tres, with nuts very like hazel nuts but fancier casings. I collected some the other day. There is not much "meat" in them, but I expect as street trees they don't get a lot of water...