The Succession of Forms in Time 



67 



Fig. 12. Varieties of Cultivated Pigeons 



Over two hundred varieties of pigeons breed true. More than a dozen types 

 differ from one another so much that, were their history not known through 

 the records of actual breeding, every observer would unhesitatingly call each a 

 distinct species, i, Silver Runt; 2, Muffed Tumbler; 3, Dragoon; 4, Homer; 

 5, Saddle Fan-tail; 6, White Maltese; 7, English Red Trumpeter; 8, White 

 Pouter; 9, English Owl; 10, White Fan-tail. From Gruenberg, Biology and 

 Human Life, published by Ginn & Company. 



