Show copper in the tissues tissue r for or several years past the working chemists have claimed that native copper may lie bo found in minute quantities in the tissues of every known species of plant anil and animal since january 1 a commission appointed by the british association for the advancement of 0 I 1 science has made exam and chemical analysis by a great variety of processes proceso s and has not HOT failed failed to find traces of copper in a single instance they found it in the coloring of ft alowa 0 tars s in the f feathers eathen beaks and eyes e yes of birds in the human brain and blood in the blades grains emins and roots of wheat in the zeales scales of fishes andeer and serpente serpents in in short everywhere |