Show SCIENCE IN the days of columbus only seven metals were known to exist now are fifty one zoologists say eliat all known species of w ild animals are gradually diminishing mini shing in size SOAP bubbles are round because every part of their surface is equally pressed by the atmosphere ann crest artesian well at grenelle france has been flowing steadily n ith out apparent diminution of volume for fifty two years galbra tunnel feet long at an altitude of feet in the andes is the greatest elevation in the worlo at which a piston rod is moved by steam IT takes cubic feet of air tr weigh as much as one cubic foot of water if cubic feet wore compressed into the of one foot its weight would be the same a an equal volume ot |