Wafers at Holy Communion

I can't claim to know anything about this stuff, but I was interested to read this and thought it worthy of note:

According to The Privy Council in Ridsdale v Clifton (No.2), (1877) 2 P.D. 276, 349: “The practice of using fine wheat bread such as is usual to be eaten, and not cake or wafer, appears to have been universal throughout the Church of England from the alteration of the rubric in 1662, till 1840, or later.” 

The Privy Council found in this case that wafers proper were illegal but “there is no averment that the wafer, as distinguished from bread ordinarily eaten, was used." It was possible that the 'wafer' was in fact "bread “such as is usual to be eaten,” “but circular, and having such a degree of thinness as might justify its being termed wafers”. They went on to say that (page 349): “if it had been averred and proved that the wafer, properly so called, had been used by the appellant, it would have been illegal.”