The =Reasons= that induc'd me to the publishing this =Catalogue=, were these: =First=, That the former =Catalogues= were out of Print. =Secondly=, That they were all of them full of groß Errours. =Thirdly=, That they were not, as I thought, so Methodical as this which I have now made; wherein the Reader will find the Imperfections I observed in the former Catalogues, amended; all the Plays which have been Printed since 1680, to this present time, added; with several Remarks, which whether or no observed, I cannot tell, but never published by any Author till now. To begin then =first= with the Errours of =former= Catalogues, they are chiefly =Five=: =First=, There were Plays inserted in all of them, which were never in Print; as for Brevity's sake, to give =one= instance for many, =The Amorous Widow, and Wanton Wife=, a Comedy. This is a =Stock-Play=, and was written (if not Translated from =Mollieres George Dandin=) by Mr. =Batterton=. =Secondly=, Some Plays were omitted, which had been Printed very long ago; as, =Cola's Fury, and Lirenda's Misery=. Written by =Henry Burkhead=. =The Religious Rebel=; and several others. =Thirdly=, =Two= Titles which belong'd to one and the same Play, were frequently printed, as if they had been two =distinct= Plays; as =The Constant Maid=, or =Love will find out the Way=. Written by =Shirley=. =Ferex and Porex=, or the Tragedy of =Gorboduc=. Written by =Sackvile= and =Norton=; with many others. =Fourthly=, The same Title was often times printed twice, and that seperately, as if writ by =two several= persons; and sometimes ascrib'd to =different= Authors likewise; when it was onely a new Edition of the same Play; as for Example, =Patient Grissel= was again repeated under the Title of =Patient Grißel Old=. And =Appius= and =Virginia=, written by =Webster=, is afterwards ascrib'd to =T. B.= though as the deceased Comedian Mr. =Carthwright=, a Bookseller by Profession, told me, 'twas onely the old Play Reprinted, and Corrected by the above-mentioned =Mr. Batterton=; with several others. =Fifthly=, Some plays are ascribed to =one= Author which were writ by another; as =Celum Britanicum=, a Masque, is to Sir =William Davenant=, though it was written by =Carew= and =Jones=. Which fault is rather to be imputed to the Publishers of Sir =William Davenant='s Workes, 1673, in Folio, than to the Compilers of the former =Catalogue=; who are more excusable than, Mr. =Phillips= in his =Catalogue= of Poets, called, =Theatrum Poetarum=; and his Transcriber =Winstanley=, who has follow'd him at a venture in his Characters of the =Drammatick= Writers, even to a word, in his =Lives of the English Poets=. Both these Authors through a mistake of the Method of former Catalogues, and their Ignorance in what Pieces each =Drammatick= Author had published, have fallen into very great Errours, as I am going to shew.