might be interested in this book has chapter on leeches

and tons of other interesting topics

http://www.amazon.com/Honey-Maggots-Other-Medical-Marvels/dp/0395924928


I was trying to find a table of contents for all the other interesting topics..the book is unique

some I recall are urine therapy, water, honey, leeches maggots and much more sorry I read this a decade ago and cant remember all the topics but very interesting book