'This is a thorough presentation of the work in hand...' Early Music Review 'Kassler's magisterial command of her subject ensures a valuable and welcome addition to scholarship on seventeenth-century English music theory and, especially, the role of music in the scientific revolution.' British Journal for the History of Philosophy 'A brilliant book.' Archives Internationales D'Histoire des Sciences 'This book certainly ought to persuade readers that the first English (i.e. vernacular) publication claiming to treat music 'philosophically' was taken seriously by the educated elite in Newtonian Britain. And like so many of Kassler's earlier publications, this study also draws attention to a wealth of material pertaining to the culture of early modern British science that most professional academics in this field have still never looked at, much less tried to understand.' British Journal for the History of Science