I thank Professor R. J. Doyle for teaching me the craft.

H.L.T.M.

I thank Emeritus Professor W. J. O'Sullivan who first drew my attention to this most intriguing organism and the present and past members of the Microbial Physiology Laboratory whose contributions made this work possible.

G.L.M.

I thank Professor Adrian Lee for his introduction into the world of "spiral bugs" and Darlene Williams for her valauble assistance on this book.

S.L.H.