62 C O N C H O L O G r, 



Mr. Du Flamel of thofe of France, In the 

 Hlftory and Memoirs of the Royal Aca^ 

 demy of Sciences of Paris. 



The Byffus of the antients, which I 

 am convinced was made of the beards 

 of the Pinnae Marine, or Sea Wings, 

 and fuch like bivalves. The Pinnas Ma- 



tlic head of the fifli, which muft be digged out witk 

 the flifF point of a horfe-hair pencil. 



The letters, figures, fpots, or what elfe fliall be fi> 

 made, will prefently appear of a pleafant light grem 

 colour ; and, if j^aced in \\\t furiy will change into the 

 following colours; Firft, a deep green, then a full y^^- 

 greeriy after into a watchet blue, then into a purphiJJ) redy 

 and laftly, into a very 6^^^^ purple red, beyond which the 

 fun can do no more. But then the laft and moft beauti- 

 ful colour, after wafliing in fcalding water and foap, and 

 dried in the furty will be of a fair bright crmfon^ or 

 pear the Prince s colour, which will continue, though, 

 there is no ufe of any fliptic to bind it. 



The changes of colours are made fafter or flower, 

 according to the degrees of the fur^s heat. 



While the cloth fo dyed lies in the fun, it will yield 

 a very llrong foetid fmell^ like garlicky or afffcctida, 



rinae. 



