Which preposition to use with scintilla

of Occurrences 6%

Goldberger was annoyed; that was evident enough from the nervous way in which he gnawed his moustache; but he had no theory any more than the police; there was not a scintilla of evidence to fasten the crime upon any one; and the end of the hearing was that the jury brought in a verdict that Philip Vantine and Georges Drouet had died from the effects of a poison administered by a person or persons unknown.

in Occurrences 1%

If his pictures and statues are well chosen it is generally thought that Scintilla told him what to buy; and yet Scintilla in other connections is spoken of as having only a superficial and often questionable taste.

Which preposition to use with  scintilla