Show experiments in breeding animals boston experiments in the breeding of animals similar to those carried on with plants by luther burbank are announced by dr earnest arnest E castle a scientist at harvard sity dr castle has been able to breed a race of guinea pigs with four toes on the hind foot where usually there are only three to invent a new color for the guinea pig the cinnamon which was not known to natural ests till his were bred a silver guinea pig that also Is new to science and two kinds hinds of rats |