S fi C T I O N 11. 35 



had a fufficient number, fome not be- 

 ing done to his approbation, or getting 

 better fpecimcns afterwards, he had them 

 re-engraved, and therefore many Shells ap- 

 pear twice in his work, and in fome copies 

 only the firft engraving, while in others 

 only the fecond engraving, is found ; this 



circumftance is alfo evident from the proof 

 plates or variations. 



Dr. Lifter undoubtedly publlfhed the 

 firft edition, in detached pieces, at different 

 periods from 1685 to 1692 ; and I imagine 

 a fecond edition was publiftied at one time, 

 which was foon after the completion of 

 the firft edition of 1692. 



I therefore think it a mlftaken notion 

 that there was but one edition of this 

 work, for certainly there were two; but 

 as the title-page and heads of the chapters, 

 &c. are plates with the engravers (his 

 daughters) names, and bear the fame date, 

 they appear only as one and the fame 

 edition. 



D ?^ However 



