For baby-boomer parents, life without kids often feels like suddenly slamming on the brakes after years in the fast lane.

The four last-mentioned mines, Wheal Crowndale, Wheal Crebor, East Liscombe, and Wheal Tamar, are on the same lode, which ranges as usual from east to west, and are included in a space of about four miles in length.

THE EXPOSURE EFFECT OF UNCLICKED BANNER ADVERTISEMENTS

However, the question must be asked: at which stage in the life-history of an ambisexual (hermaphroditic) fish does sex differentiation take place?