Count de Bournon on Bardiglione. 385 



should seek for It, resting on the single circumstance of the double 

 colour, indicated by its name, without regarding the peculiar tints, he 

 might very easily be led into a mistake, as either of the substances 

 which I have j ust mentioned would exhibit this character. 



The name of ToUte^ which had been given to bardiglione by M. 

 Tondi, beside having the same defect of being derived from a variable 

 character, that of colour, had also the inconvenience of recalling to 

 the mind other substances, the names of which bore a considerable 

 resemblance to it. All these inconveniences, it appears to me, would 

 be avoided, by choosing for mineral substances a proper name with- 

 out any peculiar signification in itself, and which should have no 

 other object but that of preventing one mineral from being con- 

 founded with another. 



S c 



