Show evolution cau caught ht in act by study of tree snail washington evolution has been caught in the act by dr paul bartsch curator of mollusks at the united states national museum in a newly completed study of a strikingly beautiful species of tree snail from the philippines first collected and described a hundred years ago Us this snail species has been re described again and again under new names because mutational variations have gone on so rapidly that each subsequent collector thought ho ha had found something thin gnew new however with a really large and complete collection before him doctor bartsch was able to demonstrate that the whole varied life complex to is really one species the snail is known to zool bool post toai sax vir gata |