Please add spaces between words: IntheprefaceofthebookNapierexplainshisthinkingbehindhisgreatdiscovery(wequotefromtheEnglishtranslationof1616oftheoriginalLatinof1614):
In the preface of the book Napier explains his thinking behind his great discovery (we quote from the English translation of 1616 of the original Latin of 1614):