HEREDITY 171 



union the sow produced some young pigs which were 

 plainly marked with the same chestnut tint as in the 

 first litter." '* 



' Professor Agassiz states that he had " experimented 

 with a Newfoundland bitch by coupling her with a 

 water-dog, and the progeny were partly water-dog, 

 partly Newfoundland, and the remainder a mixture of 

 both. Future connections of the same bitch with a 

 greyhound produced a similar litter, with hardly a 

 trace of the greyhound." 't 



' A white woman, who has had children by a negro, 

 may subsequently bear children to a white man, these 

 children presenting some of the unmistakable pecu- 

 liarities of the negro race.'l 



These are only a very few of the cases given in the 

 work already cited, which, indeed, are so well 

 authenticated, so numerous, and drawn from such 

 independent sources, that it is quite impossible to 

 disregard them. Some writers, and amongst them 

 Dr. Carpenter, have attributed the influence of a 

 previous impregnation partly to the mental impression 

 and partly to modifications in the nature of the 

 blood. There is, however, no evidence whatever in 

 favour of the latter suggestion, whilst it is very 



* 'Animals and Plants tinder Domestication,' vol. i., p. 485. 



+ Agricultural Beport of Massachusetts, 1863, p. 57. 



J ' Physiology of Man,' by Flint, vol. v., p. 347 ; see also 

 ' Human Physiology,' by Carpenter, p. 970 ; British a/nd 

 Foreign Medico - Chirv/rgioal Review, July, 1863, p. 188 ; 

 Darwin's Animals and Plants imder Domestication,' vol. ii., 

 p. 485, note. 



