Here is the link to The Fire Kasina, by Shannon Stein and Daniel M. Ingram, a book about Shannon's retreat doing the fire kasina as well as some additional commentary and goodies. May it help all who wish to develop strong concentration and the fruits that arise thereby. Many thanks to Duncan for all his work, including editing, typesetting, helping with the cover and for allowing us to use the good name of Heptarchia for publishing.