I was told about this book and I found it online and free reading. The link is: http://www.archive.org/stream/poultrydoctorinc00boerrich#page/n7/mode/2up It talks about homeopathy treatment for many ailments in fowl. I didnt find a treatment for Mereks which is what I was interested in but I am trying St John's Wort (a source of Hypericum) which has been recommended. Im not sure my hen has Mereks but Im giving it a try. I thought all chicken owners might like to be aware of this resource online.