Figure 2.

(a) Fiddler crab. Clipart courtesy of Florida Center for Instuctional Technology http://etc.usf.edu/clipart webcite. (b) Double logarithmic plot of Huxley's original data upon which his first paper [9] was based, with Uca pugnax claw weight on the ordinate and the crab weight (minus the claw weight) on the abscissa. Data reported in Table I a of [1] for sexually immature male crabs.