A careful study of it will correct a number of remarkable errors, which now pass current as historical facts in connection with the rise into fame of Harrogate as our premier Spa. These errors would never have arisen had there been a more free access to this very scarce book. Most writers appear to have depended for their knowledge of its contents upon the summary of it contained in Dr. Thomas Short's "History of Mineral Waters," published about a century after the publication of "Spadacrene Anglica." In commenting on this and other works abridged in his History, the learned author states: "Some of them are very scarce and rare. Therefore, such as have them not, have here their whole _substance_, and need not trouble themselves for the treatises." Unfortunately, they did not have their "whole substance," and hence these errors. "Spadacrene Anglica" deals mainly with the Tuewhit Well or the English Spa. It is not my intention to discuss here either the history of its distinguished author or the early history of the English Spa. This task has been kindly undertaken for me by my friend and colleague, Dr. Alexander Butler, to whom I take this opportunity to express my grateful thanks for his very suggestive contribution. Suffice it for the purpose of this short introduction to state that the medicinal qualities of the Tuewhit Well were discovered about fifty-five years prior to the publication of "Spadacrene Anglica," the credit of the discovery being due to a certain Mr. William Slingsby, not to his nephew, Sir William Slingsby as has been persistently but erroneously stated. The Tuewhit Well was first designated "The English Spa" in or about the year 1596 by Timothy Bright, M.D., sometime rector of both Methley and Barwick in Elmet, near Leeds, which goes far to support the well established belief that the waters of the Tuewhit Well were the first to be used internally for medicinal purposes in England. To-day the word Spa is, of course, a general term for a health resort possessing mineral waters, but in the days of Dr. Timothy Bright no such meaning attached to it; Spa was the celebrated German health resort, and one can readily conceive with what patriotic enthusiasm Dr. Timothy Bright would proclaim the Tuewhit Well as "The English Spa" when the medicinal properties of this Well were found to resemble those of the two famous medicinal springs of Sauveniere and Pouhon at Spa. "Spadacrene Anglica" (as already mentioned) was published in 1626. Later in the same year appeared another work on Harrogate, entitled "News out of Yorkshire," by Michael Stanhope, Esq. Further, the time of Mr. William Slingsby's birth has been traced back to between the years 1525 and 1527. The year 1926 is therefore the tercentenary of the publication of Deane's "Spadacrene Anglica," and Stanhope's "News out of Yorkshire," and may also be regarded as the quatercentenary of the birth of Mr. William Slingsby. What a triple event for commemoration!