Hi Jamie
It all depends on what part of the country you live, definitely around the mill areas of Lancashire and Yorkshire "shoddy" Wool fertiliser was used but I have not seen any substantial proof that buttons would have been attached when the cloth went through a shredder.
Night Soil is basically human waste, if you think that mains sewerage has only been in existence in the vast majority of homes for no more than 100 years and far less in rural communities (some still don't), it all had to go somewhere
![Huh](http://www.detectingwales.com/Smileys/default/huh.gif)
Night Soil men would clear out the privy (a bucket) during the night and this was sold to farmers to use as fertiliser....yum yum
![Roll Eyes](http://www.detectingwales.com/Smileys/default/rolleyes.gif)
By far the commonest button found is the four hole button and as most will know this was primarily used for trouser flies and braces so you don't need much of an imagination to know how they got there.
But what about the larger "coat" type buttons?
Well you now have to put yourself back in time and realise that the "privy" is generally set as far from the living area as possible because of the smell
![Lips sealed](http://www.detectingwales.com/Smileys/default/lipsrsealed.gif)
and of course we are talking of a time before electric light. So it's the middle of winter and it's snowing, are you going to just pop the 100yds to the loo in your shirt sleeves? No, your going to put your coat on and that's if we are living at a time when you ever took a jacket etc off, so the simple process of going to the loo becomes far more involved with unbuttoning and buttoning and there are far more chances of buttons falling off and into the bucket of...well you know.
But how come so many?
Here we come to the simple maths.
If we tie in the number of years buttons have been commonplace against the years before mains sewerage we end up with a figure around 250 years, now take a small village of say 200 people and now let them go to the loo only once a day (unrealistic) that will give us a total of visits to the lavi and losing a button of 18,250,000. If we allow for a button only being lost every 5000 visits we still end up with 3650 buttons.
So the moral of this story is......."don't stick them in you mouth"
![Grin](http://www.detectingwales.com/Smileys/default/grin.gif)
By the way many of the pot fragments you see on fields got there the same way as there were no rubbish collections back then and so a good way of disposing of rubbish was to bury it in the bucket
![Wink](http://www.detectingwales.com/Smileys/default/wink.gif)