(1) Connective tissue
(2) Red part, made up of microscopic tubes holding a red juice. The juice contains:
(a) Water
(b) Red colour
(c) Flavour
(d) Muscle albumen—a protein substance similar to egg-white
(e) Mineral matter.
Muscle fibres highly magnified
Bundle of fibres. Tubes of one fibre. Proper carving of fibres—across the grain.
It should be made clear that the walls of such tiny tubes can never be thick enough to be tough. Attention should be called to the real cause of toughness—the thick connective tissue.