The wormery is working. It’s a bit messy (that word again!) but it’s showing what we want it to do. Here are some pictures showing how to layer it up with soil and sand. After that you put worms in and sprinkle some dead leaves and grass on top. Slip the outer case on and let them get on with it.
The final picture shows the vertical worm tracks and if you look closely you can see some of the grass pieces have been carried down into the “earth”.
Darwin was something of a worm expert, and his book The Formation of Vegetable Mould through the Action of Worms, with Observations of their Habits is notable for selling better than On the Origin of Species when first published. I bought a reprint out of curiosity and found it to be more interesting than the title suggests.
One day I must try the paper triangle experiment he suggests.