Its fixation is effected simply by the foot disk acting as a I'ucker. When there is but one Sagartia upon a shell, it is found upon tbe ;;ide neare"t the crab. But there are oftpn several-as many as seven or eight-and then the foot disks, which touch each other without over lapping, cover nearly the entire shpl!. What are the relations of the crustacean and acti nia? Is it simply chance that causes them to live side by!
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.