Sentence:  The firſt <WSD>Leidger</WSD>, or <WSD>Leidger</WSD> Nº A. being thus finiſh'd, it is requiſite to prepare for the erecting of thy Accounts anew in a <WSD>Leidger</WSD> Nº B. or thy ſecond <WSD>Leidger</WSD>, which thou ſhalt do thus. 
Meaning of the word marked with <WSD> tags:  A book for keeping notes, especially one for keeping accounting records; a record book, a register.