INHERITANCE, VARIATION AND SELECTION. 27 



certain well known laws which will be more or less involved in the 

 subsequent discussion. 



EXAMPLES OF INHERITANCE. 



Dr. Anderson gives the case of a bitch that was born with 

 three legs. "She has had several litters of puppies, and among 

 these several individuals were produced that had the same defect 

 as herself." 1 



Mr. Day 2 gives the case of a mare, "Basto", that had ten foals 

 between 1721 and 1739, one of which was "Crab", by Alcock's 

 "Gray Arabian." A granddaughter of Crab (great-granddaughter 

 of Gray Arabian) had fourteen foals, six being gray and eight 

 being bays or browns. One of these six grays had a gray foal 

 which in turn had ten gray foals by six different stallions. One 

 of the ten had a gray foal born more than a century after the 

 first birth. As this relates to English thoroughbred horses, which 

 are rarely of a gray color, the persistency of a single infusion of 

 blood from a gray stallion is quite remarkable. 



In 1770 tiiere was born in Paraguay a hornless bull which 

 became the progenitor of a race of hornless cattle that has multi- 

 plied extensively in that country. 3 



ABNORMAL FINGERS AND TOES. 



Huxley 4 gives the case of Gratio Kelleia, the Maltese, who was 

 born with six fingers on each hand and a like number of toes on 

 each foot. He had four children, Salvator, who had six fingers 

 and toes like his father ; George, who had five each, but with one 



(1) Recreations in Agriculture, Vol. I, p. 68. 



(2) The Horse, p. 146. 



(3) Cyclopaedia of Anatomy and Physiology, Vol. IV, p. 1311. 



(4) The Origin of Species, p. 92. 



