328 



LAWS OF VARIATION. 



Chap. XXV. 



these teeth would likewise fail 



told 



He re * 



another 



infant could not be 



case communicated to me 



Mr 



Wallace on the authority of Dr. Purland, a dentist: Julia 

 Pastrana, a Spanish dancer, was a remarkably fine woman, but 

 she had a thick masculine beard and a hairy forehead ; she was 



a show 



photographed, and her stuffed skin was exhibited , 



but what concerns us is, that she had in both the upper and 

 lower jaw an irregular double set of teeth, one row being placed 



of which Dr. Purland took 



From the 



redundancy of the teeth her mouth projected, and her face had 



gorilla-like appear 



These 



d those of the hairless 



dogs forcibly call to mind the fact, that the two orders of mam 



mals 



ely 



Edentata and Cetacea 



most 



abnormal in their dermal covering, are likewise the most ab 

 normal either by deficiency or redundancy of teeth. 



The organs of sight and hearing are generally admitted to be 

 homologous, both with each other and with the various dermal ap- 

 pendages ; hence these parts are liable to be abnormally affected 



junction. Mr. White Cowper says " that 



of 



" double microphthalmia brought under his notice he has at the 

 "same time met with defective development of the dental sys- 

 " tern." Certain forms of blindness seem to be associated with 

 the colour of the hair ; a man with black hair and a woman 

 with light-coloured hair, both of sound constitution, married 



and had nine 

 children, five 



children, all of whom were born blind 



of 



ith dark hair and br 



iris were afflicted 



amaurosis ; the four others, with light-coloured hair and 



blue iris, had amaurosis and cataract conjoined." 



uld be given, showing 



r 



various affections of the eyes and ears ; thus Liebreich 

 that out of 241 deaf-mutes in Berlin, no less than 



Several 

 between 



suffered from the rare disease 

 White Cowp 



called pigmentary 



fourteen 

 is. Mr. 



<e 



) distinguish diffei 

 associated with a 

 musical sounds." 20 



and Dr. Earle have remarked that inability 



colours 



blindness 



ipondin 



often 



inability to distinguish 



20 These statements are taken from 

 Mr. Sedgwick, in the ' Medico-Chirurg. 

 Review,' July 1861, p. 198; April 1863, 



pp. 455 and 458. Liebreich is quoted 

 by Professor Devay, in his 'Manages. 

 Consanguins,' 1862, p. 116. 



